Question Paper
Class / Subject: Class 10 (CBSE) · Mathematics
Chapter: Chapter 13 — Chapter 13: Statistics
Time Allowed: 15 minutes
Max Marks: 6
1. The mean of grouped data can be found using the: [1]
(A) direct method
(B) trial method only
(C) estimation only
(D) guessing method
2. In the direct method, xᵢ represents the: [1]
(A) midpoint of each class interval
(B) frequency of each class
(C) the class width
(D) the total number of observations
3. The step-deviation method is especially useful when: [1]
(A) class intervals are all of equal width
(B) class intervals vary greatly in width
(C) there is only one class interval
(D) frequencies are all zero
4. The median class is identified using: [1]
(A) cumulative frequency
(B) mean only
(C) mode only
(D) class width only
5. The modal class is the class interval with: [1]
(A) the highest frequency
(B) the lowest frequency
(C) the smallest class width
(D) the largest class width
6. Median and mode formulas for grouped data are needed because: [1]
(A) individual exact data values are unknown, only their class interval
(B) mean cannot be calculated for grouped data
(C) grouped data has no meaningful median or mode
(D) formulas are simpler for grouped data than ungrouped