Test: Statistics- 1 - Class 9 MCQ

Out of sixteen observations arranged in an ascending order, the 8^th and 9^th observations are 25 and 27. Then, the median is

Vihaan has marks of 92, 85, and 78 in three mathematics tests. In order to have an average of exactly 87 for the four math tests, he should obtain

To analyse the election results, the data is collected from a newspapers. The data thus collected is known as

The class size of a distribution is 25 and the first class interval is 200-224. Then, the class marks of first two class intervals are

Which of the following is NOT a common measure of central tendency?

What is the median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84?        

If the mean of x and 1/x is M, then the mean of x² and 

Which of the following variables are discrete ? 1. Size of shoes, 2. Number of pages in a book, 3. Distance travelled by a train, 4. Time

In a frequency distribution, the mid-value of a class is 60.5 and the width of the class is 10. The lower limit of the class is

The mean for counting numbers through 100 is

Mode of a set of observations is the value which

The mean of six numbers is 23. If one of the numbers is excluded, the mean of the remaining numbers becomes 20. The excluded number is

For a given data, the difference between the maximum and minimum observation is known as its

The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. The upper class limit of the highest class is

The mean of first four prime numbers is

The mode of 4, 6, 7, 8, 12, 11, 13, 9, 13, 9, 7, 8, 9 is

The mean of five observations is 15. If the mean of first three observations is 14 and that of last three is 17, then the third observation is

In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, 99. The range of this data is

In a bar graph, 0.25 cm length of a bar represents 100 people. Then, the length of bar which represents 2000 people is

If, for the set of observations 4, 7, x, 8, 9, 10 the mean is 8, then x is equal to

A set of data consists of six numbers: 7, 8, 8, 9, 9 and x. The difference between the modes when x = 9 and x = 8 is

There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be – 3.5. The mean of the given number is