10. Data sets with a smaller ranges are said to have _____ vanability
A large
B Small
C. big
D. Zero
11. There are commonly used measures of variability
A 4
B 5
C. 6
D. 3
12. To describe the spread of the data, we need to use measures of
A central tendency
B. variability
13. The Principal of a certain school would like to know the level of difficulty in Mathematics of all Grade 7 students in terms of mean and standard deviation. What standard deviation should be used?
A Sample Standard Deviation
B. Population Standard Deviation
14 What is the value of the variance if the standard deviation is 3.5?
A 12.25
B. 1.225
C. 122.5
D. 1225​