The mean of the data :
2, 8, 6, 5, 4, 5, 6, 3, 6, 4, 9, 1, 5, 6, 5
is given to be 5. Based on this information, is it correct to say that the mean of the data:
10, 12, 10, 2, 18, 8, 12, 6, 12, 10, 8, 10, 12, 16, 4
is 10? Give reason.
In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is :
(A) 0.25 (B) 0.50 (C) 0.75 (D) 0.80
In a sample study of 642 people, it was found that 514 people have a high school certificate. If a person is selected at random, the probability that the person has a high school certificate is :
(A) 0.5 (B) 0.6 (C) 0.7 (D) 0.8
Mode of the data
15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17, 15 is
(A) 14 (B) 15 (C) 16 (D) 17
Median of the following numbers :
4, 4, 5, 7, 6, 7, 7, 12, 3 is
(A) 4 (B) 5 (C) 6 (D) 7
For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively :
(A) upper limits of the classes (B) lower limits of the classes
(C) class marks of the classes (D) upper limits of perceeding classes
The median of the data
78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is
(A) 45 (B) 49.5 (C) 54 (D) 56
The mean of 25 observations is 36. Out of these observations if the mean of first 13 observations is 32 and that of the last 13 observations is 40, the 13th observation is :
(A) 23 (B) 36 (C) 38 (D) 40
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 numbers is :
(A) 46.5 (B) 49.5 (C) 53.5 (D) 56.5
+91 94284 01196
© Copyright 2025. Doubtora. All Rights Reserved
