STATISTICS and PROBABILITY class X

Construction of a cumulative frequency table is useful in determining the

• mean

• median

• mode

• all the above three measures

In the following distribution :

the number of families having income range (in Rs) 16000 – 19000 is

• 16

• 17

• 18

• 19

Consider the following frequency distribution of the heights of 60 students of a class :

The sum of the lower limit of the modal class and upper limit of the median class is

• 310

• 315

• 320

• 325

Which of the the following can be the probability of an event?

• – 0.04

• 1.004

• 18/23

• 8/7

A card is selected at random from a well shuffled deck of 52 playing cards. The probability of its being a face card is

• 3/13

• 4/13

• 5/13

• 6/13

A bag contains 3 red balls, 5 white balls and 7 black balls. What is the probability that a ball drawn from the bag at random will be neither red nor black?

• 1/5

• 1/3

• 7/15

• 8/15