BASIC STATISTICS

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1. What is the mean of the data: 5, 10, 15, 20, 25?

A 15

B 20

C 10

D 25

2. The median of the data: 1, 3, 5, 7, 9, 11, 13 is:

A 5

B 6

C 7

D 8

3. The median is a measure of:

A Spread

B Central tendency

C Variability

D Dispersion

4. If each value in a data set is multiplied by 2, the new mean is:

A Halved

B Doubled

C Unchanged

D Squared

5. For ungrouped data, the median is the:

A Middle value when data is arranged in order

B Most frequently occurring value

C Average of the data

D Difference between max and min values

6. What is the weighted mean of scores 5, 7, 9 with weights 2, 3, 1 respectively?

A 6.83

B 7.00

C 6.00

D 7.33

7. What is the relative frequency of an event if it occurs 15 times out of 50 trials?

A 0.30

B 0.15

C 0.50

D 0.35

8. What is the sum of all relative frequencies in a data set?

A 0

B 0.5

C 1

D 100

9. In a data set, the value that occurs most frequently is the:

A Mean

B Median

C Mode

D Range

10. What is the weighted mean if scores are 4, 6, 8 with weights 1, 2, 3 respectively?

A 6.67

B 7.00

C 6.00

D 7.33

BASIC STATISTICS

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