Free SAT Practice Question

Question 1 of 1
ID: SAT-PD-10
Section: Math - Problem Solving & Data Analysis
Topic: Statistics (Mean/Median)
Difficulty level: Challenging

Practice Mode: Single selected Question » Back to Overview

The data given below shows the visitors in a museum on 1$^{\text{st}}$ January to 15$^{\text{th}}$ January for a particular year.

Day	Number of visitors	Day	Number of visitors	Day	Number of visitors
1st January	32	6th January	46	11th January	60
2nd January	51	7th January	30	12th January	37
3rd January	27	8th January	42	13th January	46
4th January	40	9th January	35	14th January	30
5th January	33	10th January	65	15th January	56

Which of the following statement is NOT true for the above data? Treat every option independent of others. (Calculator allowed)

AIf the number of visitors 42 on 8$^{\text{th}}$ January is removed from the given dataset, the average of the dataset, excluding 8$^{\text{th}}$ January, will not change.

BThe difference between the median and the highest number of the dataset is less than 26.

CIf every number in the dataset is increased by 2, the average will also increase by 2.

DIf the dataset is arranged in increasing order, the difference between the average of first four numbers and that of the last four numbers is equal to one of the number in the dataset.

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