CLASE 1 PSICÓMETRICO | OMX 2025

Name: CLASE 1 PSICÓMETRICO | OMX 2025
Uploaded: 2025-03-04T03:52:11.000Z
Duration: 2 h 38 min 48 s

Introduction to Psychometric Assessment

Overview of the Class Structure

The instructor welcomes students and encourages them to ask questions about access, courses, and other topics at the end of the class.

A recap is provided on what has been covered so far in the course, emphasizing the distinction between psychological evaluation (Se DEA) and psychometric assessment (mar).

Importance of Understanding Different Structures

The instructor highlights that both Marina and Sedena have different exam structures, which is crucial for students to understand as they prepare for their assessments.

Emphasis is placed on reviewing psychological preparation before moving on to psychometric sections.

Psychometric Section Breakdown

Key Components of Psychometric Evaluation

The psychometric exam primarily assesses intellectual capacity through reasoning questions: verbal, abstract, numerical, and alphanumeric.

Students are reminded that both Marina and Sedena will include a psychometric section along with an in-person psychological interview.

Focus Areas for Study

The four blocks of reasoning—logical, verbal, numerical, and abstract—are identified as essential study areas for both groups.

Students are encouraged to confirm their understanding by typing "enterado" in the chat regarding these four blocks.

Exam Format and Timing

Structure of Psychometric Exams

Each section consists of 25 questions with a time limit of 12 minutes per section; total duration for Cedena's exam is approximately 50 minutes.

For Marina's exam, it lasts slightly longer at around 60 minutes due to additional questions.

Preparation Strategy

The instructor stresses the importance of covering all necessary information thoroughly during class sessions.

Beginning with Numerical Reasoning

Introduction to Numerical Reasoning

The first topic discussed is numerical reasoning which involves identifying patterns or sequences within lists of numbers.

Understanding Patterns and Rules in Numerical Reasoning

Defining Patterns and Rules

A pattern is an element that consistently repeats, linking a certain number of elements together. A rule is something that must always be followed in each instance.

Importance of Punctuality

The instructor emphasizes the importance of punctuality, indicating that late arrivals disrupt the session. Students are encouraged to find all relevant elements during the lesson.

Identifying Relationships Among Numbers

The key focus in numerical reasoning is to identify patterns or rules that relate numbers when presented with questions. Real-life examples will be used for better understanding.

Examples of Number Sequences

In the sequence 1, 2, 3, 4, 5, 6, 7:

Each number increases by one (the rule).

The pattern involves adding one to each previous number.

In another sequence: 28, 24, 20, 16, 12, 8:

The commonality is a consistent subtraction of four (the rule).

This demonstrates how different sequences can have distinct rules but still follow identifiable patterns.

Exploring Different Types of Patterns

For the series: 2, 4, 6, 8, 10:

Each number increases by two (the rule).

Another example includes squares:

Sequence: 1 (1²), 4 (2²), 9 (3²), etc.

Recognizing these as squares illustrates how various mathematical operations can define patterns.

Flexibility in Approaching Sequences

It’s crucial to understand that there are multiple ways to approach identifying patterns; no single method is correct. What matters is recognizing what you are being asked regarding sequences.

Focus on Numerical Reasoning Types

In numerical reasoning assessments:

Students should identify arithmetic patterns primarily.

Complex and geometric patterns may also appear but will generally involve basic operations learned early on.

Constant Operations in Sequences

All numerical reasoning revolves around constant sums or differences. Understanding how numbers are arranged helps solve problems effectively.

Consistency Leads to Success

Using an analogy from racing:

Consistent performance leads to success; similarly in sequences—consistent addition or subtraction yields predictable results.

By focusing on these principles and examples throughout the lesson on numerical reasoning and pattern recognition, students can enhance their problem-solving skills significantly.

Understanding Constant Addition and Subtraction in Number Sequences

Introduction to Patterns in Numbers

The concept of constant addition and subtraction is fundamental in number sequences, where the relationship between numbers often involves consistent increments or decrements.

An example is presented involving a series of numbers with one incorrect entry, prompting participants to identify the error.

Analyzing the Given Series

The series provided includes: 1, 4, 5, 3, 6, 4, 7, 5, 9, 6, and an erroneous number that needs identification.

Step-by-step analysis begins by examining how each number relates to its neighbors through addition or subtraction.

Identifying Relationships Between Numbers

For instance:

From 1 to 4, there is an addition of 3.

From 4 to 3, there is a subtraction of 1.

From 3 to 6, there is an addition of 3 again.

This pattern continues as participants are guided through identifying relationships until they reach a conclusion about the sequence's integrity.

Finding the Incorrect Number

After analyzing the patterns:

It becomes clear that the number 9 does not fit within the established pattern; it should be replaced with 8 for consistency.

Engaging Participants with New Questions

A new question is posed for participants to solve under time constraints—finding the next number in another sequence: 6, 9, 14, 21, and 30.

Emphasis on mental calculation skills is highlighted since exam conditions will not allow for written notes.

Exploring Further Patterns

Participants are encouraged to find relationships among these numbers:

Each step involves increasing additions (e.g., from 6 to 9, add 3, then from 9 to 14, add 5, etc.).

Conclusion on Pattern Recognition

The final insight reveals that each increment increases by two (i.e., +2), leading them towards finding that adding this pattern results in identifying future numbers correctly.

Thus concluding that after adding appropriately leads them back around full circle confirming their understanding of numerical patterns.

Understanding Arithmetic and Geometric Sequences

Introduction to Practice Material

The material provided is designed for practice, emphasizing the importance of engaging with exercises to enhance understanding.

An example of an arithmetic sequence is introduced: 200, 190, 180, and 170. The task is to find the fifth term in this sequence.

Solving Arithmetic Sequences

To determine the fifth term, a consistent subtraction of 10 from each term is established (e.g., 200 - 10 = 190).

The answer for the fifth term is calculated as follows: starting from 170 (the fourth term), subtracting another 10 gives us 160.

Operations Beyond Addition and Subtraction

It’s noted that sequences may involve other operations such as multiplication and division, not just addition or subtraction.

A constant rule applies where all multiplications or divisions must be consistent throughout the sequence.

Understanding Multiplication in Sequences

An example illustrates a multiplication sequence: starting with numbers like 2, we see that multiplying by a constant (in this case, by two) generates subsequent terms (e.g., 2 times 2 = 4).

The next number in the series after multiplying by two consistently results in 16 times 2 = 32.

Exploring Division in Sequences

A new sequence involving division is presented: starting with numbers like 64, 32, 16, and 8. Each number represents half of its predecessor.

Continuing this pattern leads to finding that half of four equals two, and half of two equals one.

Identifying Patterns in Complex Sequences

A more complex series is introduced: 2, 6, 18, and 54. Students are tasked with identifying patterns to find the sixth position.

The pattern involves multiplying each number by three; thus, confirming that 54 times 3 = 162.

Final Calculation for Sequence Position

Clarification on positions reveals that while 162 corresponds to the fifth element, it must be multiplied again by three to find the sixth element.

Therefore, calculating yields that the sixth element is indeed 486.

Understanding Complex Sequences in Psychometric Exams

Identifying Key Questions

The discussion begins with a focus on identifying specific questions in psychometric exams, particularly regarding the position of numbers within sequences.

Emphasis is placed on the importance of quickly finding answers to various types of numerical reasoning questions, highlighting that understanding the question's requirements is crucial.

Types of Numerical Sequences

Transitioning to complex sequences, it’s noted that students should practice mental calculations for different types of series, including addition, subtraction, multiplication, and division.

Examples are provided where students may need to square or cube numbers as part of their reasoning tasks; squaring is more common than cubing due to its relative simplicity.

Recognizing Patterns

A simple example illustrates how squares are derived from integers (1² = 1, 2² = 4), reinforcing the idea that recognizing these patterns visually can aid in answering exam questions.

Students are encouraged to identify patterns in given sequences (e.g., 7, 10, 16, 25, and 37), prompting them to analyze how each number relates to the others.

Analyzing Differences Between Numbers

The instructor engages students by asking them to determine the pattern connecting numbers in a sequence. This interactive approach helps solidify understanding.

It’s revealed that differences between consecutive numbers vary (e.g., +3 from 7 to 10; +6 from 10 to 16), emphasizing the need for careful analysis when determining patterns.

Applying Mathematical Operations

Students are tasked with calculating further values based on identified patterns. For instance, they must add calculated differences back into existing sequence values.

The instructor explains how previous sums lead into new calculations (e.g., adding +15 after establishing a pattern), demonstrating practical application of learned concepts.

Preparing for Exam Formats

Acknowledgment is made about potential variations in exam formats where letters may be combined with numbers. This introduces complexity since letters have fixed values compared to infinite numerical possibilities.

The session concludes with a reminder about the limited number of purely numerical questions expected on exams and hints at strategies for tackling mixed-format problems effectively.

Understanding the Alphabet and Its Usage in Exams

Importance of the Letter "Ñ" in Language

The speaker emphasizes that while the letter "ñ" is part of the Spanish alphabet, it is

Understanding Patterns in Alphabet Sequences

Incremental Patterns in the Alphabet

The sequence starts with letters incrementing in alphabetical order, but there is a reverse pattern for certain letters, such as starting from 'c' and moving backward.

After a capital letter, the next letter must be lowercase; thus, following 'C', the sequence continues with lowercase letters: c, d, e.

The task involves identifying patterns between uppercase and lowercase letters while observing their positions in the alphabet.

Observations on Letter Positioning

Engagement with viewers is encouraged; students are reminded to interact by liking the content if they find it helpful.

The first letter of the series is 'A' (uppercase), which corresponds to position 1 in the alphabet.

Following 'A', the next letter is 'd' (lowercase), corresponding to position 4. This establishes a numerical pattern based on squared values.

Combining Numerical and Alphabetical Patterns

A combination of two patterns emerges: one being quadratic numbers and another being uppercase/lowercase distinctions.

To determine subsequent letters, students must square their respective positions; for example, 5 squared equals 25.

The 25th letter of the alphabet is identified as 'Y', which needs to follow established capitalization rules.

Finalizing Answers and Addressing Complexity

The answer for this sequence should be written as an uppercase 'Y', confirming understanding of both patterns discussed.

Engaging with Complex Problems

Students express concern over complex problems presented within limited time frames; these challenges are deemed among the most difficult types encountered.

Operations Involving Letters and Their Values

Assigning Values to Letters

Each letter has a specific value based on its position in the alphabet: A = 1, B = 2, C = 3... Z = 26.

An operation involving addition of values assigned to letters (e.g., c + d where c = 3 and d = 4).

Calculating Results from Letter Operations

Performing operations like c + d results in numerical outcomes that correspond back to letters; here it totals seven.

Identifying Corresponding Letters from Numbers

The seventh letter of the alphabet is identified as 'G', providing clarity on how operations translate back into alphabetical characters.

Challenges with Mixed Sequences

Discusses potential difficulties when combining letters with numbers within sequences during assessments or exams.

Emphasizes that while numbers are infinite, letters have finite combinations; thus careful analysis is required when solving mixed sequences.

Understanding Letter and Number Sequences

Analyzing Combinations of Letters

The discussion begins with the concept that there can be no more than 26 combinations related to the alphabet. The example illustrates how letters are skipped in sequences, such as from A to C skipping B.

Continuing this pattern, it is noted that when moving from C to E, D is skipped. This establishes a rule for identifying missing letters in sequences.

Exploring Numeric Patterns

The speaker transitions to numeric sequences, explaining how numbers like 2, 4, and 6 follow a pattern where each number increases by +2. This mirrors the letter sequence analysis.

A more complex example is introduced with descending order letters (Z, X, V), highlighting that Y and W are skipped respectively. The next letter in this sequence would be T.

Combining Letters and Numbers

A combined sequence of letters and numbers (A2, B4, C6...) shows that while letters increase sequentially (A to E), numbers increase by two (2 to 10).

The exercise prompts participants to find the next element in a given sequence involving both letters and numbers.

Identifying Patterns in Sequences

Participants analyze the letter sequence Z, X, V, T which skips one letter at a time leading to R as the next letter.

For numbers like 1, 4, 9, and 16 observed as squares (1² = 1; 2² = 4; etc.), participants deduce that the next number should be 5^2, resulting in 25.

Engaging with Exercises

Following an explanation of patterns within sequences, participants are encouraged to solve exercises independently.

In another exercise regarding finding two letters within "domingo" that have equal spacing between them as they do in the alphabet introduces a new layer of complexity.

Assigning Values Based on Position

Each letter's value based on its position within "domingo" is discussed. For instance: D = 4; O = 15; M =13; I =9; N =14; G =7.

Emphasis is placed on ensuring selected pairs of letters maintain equal distance both within the word itself and according to their alphabetical positions.

This structured approach provides clarity on how sequences work with both letters and numbers while engaging learners through practical exercises.

Analysis of Letter Distances in Words

Exploring Letter Pair Distances

The discussion begins with analyzing letter pairs, specifically 'd' and 'm', noting that they have one letter distance in the word "domingo."

The speaker examines the alphabetical distance between 'd' and 'm', identifying eight letters (e, f, g, h, i, j, k, l) separating them in the alphabet.

Moving on to another pair ('o' and 'i'), it is noted that there is a one-letter distance in "domingo," but five letters separate them alphabetically.

The next pair analyzed is 'm' and 'n', which are adjacent both in the word and alphabetically; thus they do not meet the required criteria for separation.

The speaker emphasizes that for valid pairs, there must be an equal number of letters between them as there are in their respective positions within the alphabet.

Validating Letter Configurations

A detailed examination of pairs continues with 'i' and 'g'; while they have a one-letter gap in "domingo," their alphabetical distance also confirms this relationship.

The analysis includes checking other pairs like 'n' and 'o,' concluding they do not satisfy the conditions since they are consecutive without any intervening letters.

It is reiterated that only specific configurations fulfill the requirement where both word-based and alphabetical distances align correctly.

Acknowledgment of student confusion regarding these types of questions highlights their complexity; however, clarity on valid configurations is provided through examples.

Final Question Analysis

As class progresses towards its conclusion, a new question arises about counting instances where ‘n’ is immediately followed by ‘o,’ excluding cases where ‘o’ follows a ‘t.’

The instructor guides students through identifying valid pairs within a series while emphasizing adherence to specified conditions for counting.

Examples illustrate how to discern valid from invalid pairs based on proximity to other letters (like ‘n’ followed by ‘o’ or interrupted by ‘t’).