Answers IQ test

Question 21

?
Which figure should replace the question mark?

Explanation

This problem involves a set of figures, each with its own weight. To solve the problem, you need to express the weight of the figure that is only present on the left side of the scale in terms of the other weights. There is only 1 answer option that has the same relation. In this case you would say: 4a + 2b = 3a + 1c => 2b = 3a - 4a + 1c. There is only one answer option that gives the same relation

Question statistics

Overview
Question ID: b3mfePTL
Main category: Logical Reasoning
Sub category: Figure Scales
Difficulty Level: 13What is item difficulty?
Nr of times answered:
Average IQ of people who answered this question: 109.39
Percentage of answers correct: %
Item Response Theory (IRT)What is Item Response Theory?
Item difficulty: 13 / 20What is item difficulty?
Discrimination: 1.90 What is item discrimination?
Point of Maximum Information: 106.46 What is Point of Maximum Information?
Item Characteristic Curve (ICC)
This Item Characteristic Curve shows the probability that a person with a given IQ level will correctly answer this question. This graph is based on the answers and the IQ levels of individual test takers who have answered this question.
Distractor AnalysisWhat is distractor analysis?
Average IQ of people who gave the correct answer: 113.65 Why does the average IQ of people who answer the questions differ per question?
Average IQ of people who gave an incorrect answer: 103.41
Percentage per answer
The graph illustrates the percentage of individual test takers, in total, who selected each answer option for this question.
Average IQ per answer
The graph displays the average IQ of test takers who chose each answer option. In an effective question, the average IQ of test takers who selected the correct answer should be significantly higher than that of test takers who selected the other options, also known as distractors.

Time spent: you used 78 seconds to answer this question