Answers IQ test

Question 6

image/svg+xml 5 10 -5 15 -20 35 ?
What is the next number in this sequence?


The next number in the series is always found by subtracting the previous number from the number before it. So you calculate the number at position 3 by subtracting the number at position 2 from the number at position 1

Watch out, subtracting a negative number is the same as adding the number.
5 - 10 = -5
10 - -5 = 15
-5 - 15 = -20
15 - -20 = 35
-20 - 35 = -55
image/svg+xml 5 10 -5 15 -20 35 ?

Question statistics

Question ID: Wn3VCawM
Main category: Numerical Reasoning
Sub category: Number sequences
Difficulty Level: 7What is item difficulty?
Nr of times answered: 2920
Average IQ of people who answered this question: 100.29
Percentage of answers correct: 67.53%
Item Response Theory (IRT)What is Item Response Theory?
Item difficulty: 7 / 20What is item difficulty?
Discrimination: 1.41 What is item discrimination?
Point of Maximum Information: 81.75 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 2920 individual test takers who have answered this question.
Distractor AnalysisWhat is distractor analysis?
Average IQ of people who gave the correct answer: 103.24 Why does the average IQ of people who answer the questions differ per question?
Average IQ of people who gave an incorrect answer: 94.18

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