EASY
8th Foundation
IMPORTANT
Earn 100

The mean of certain  number of observations is 10. Even though one observation is deleted, mean is not altered. Then, the deleted observation is

50% studentsanswered this correctly

Important Questions on Statistics

EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 10
For a certain data, if the median is equal to the mean, then the mode=_____
MEDIUM
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 11
A person spends 20% of his income towards food,25% for education, 15% for miscellaneous expenses and saves 40%. The angle of sector representing expenditure towards education in pie diagram showing his income is _____.
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 12
The frequency of an observation p is q and the frequency of another observation is q is p, then mean is _____
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 13
The most stable measure of central tendency is
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 14
Krishna wrote 1 to 100 numbers, the frequency of digit 9 is _____
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 15
What measure of central tendency can be used to know the sales strategy in a shoe shop?
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 16
Find the mean of the following data: 4,6,7,13,25 and 35
EASY
8th Foundation
IMPORTANT
Pearson IIT Foundation Mathematics Class 8>Chapter 15 - Statistics>PRACTICE QUESTIONS CLASSROOM WING>Q 17
Find the median of the following data: 24,14,13,26,12,18 and 9