PART III. Assessment d. reliability
d. variance
a.
b. range
b. square
Directions: Write the letter of the correct answer.
1. It is a measure that indicates the extent to which numerical data are spread out
about the average value in a data set.
a. central tendency b. consistency
C. variability
2. Which of the following is not a measure of variability?
a. mean b. mean deviation
c. standard deviation
_3. It is a measure of variability that you get when you subtract the smallest number
in a set of data from the largest number.
mean deviation
c. standard deviation
d. variance
4. Standard deviation is always the
of variance.
a. square root
c. median of
d. mean of
5. If the variance of a data set is 34, what is the standard deviation?
a. 4
b. 8
c. 32
d. 4096
6. If the standard deviation of a data set is 4, what is the variance?
a. 2
b. 4
b. 8
d. 16
-7. If the range of the set of scores is 28 and the lowest score is 9, what is the
highest score?
a. 36
c. 38
d. 39
8. Mrs. Aguilar has just given a Mathematics exam, and wants to calculate the
"range of performance of her students. What must she do?
a. Identify the central score.
b. Find the score that occurs most.
c. Subtract the lowest score from the highest score.
d. Add the lowest and the highest score,
b.37
10. How many numbers of values are indicated in the table?
a. 3
b.4
C. 12
d. 15
11. What is the mean of the scores?
b. 17
b. 17.5
C. 18
d. 18.5
12. The range of the scores is
a. 36
b. 21
C. 15
d. 6
13. What is the mean deviation of the scores?
a. 1
b. 2
C. 3
d. 4
14. What is the sum of the squared deviations from the mean?
a. 20
b. 18
c. 15
d. 10
15. The calculated variance rounded to the nearest hundredth is
a. 6.67
b. 6.22
c. 5.35
d. 3.48
Below is the frequency distribution of the recorded weights in kilograms of the Grade 7
students at a certain high school in Pangasinan.
Weights(kg)
Frequency
44-46
4
41-43
13
38-40
16
35-37
9
32-34
3
d. 42
d. 16.5
16. How many students were weighted?
a. 50
b. 47
C. 45
17. What is the range of the data set?
a. 15
b.15.5
C. 16
18. What is the class mark of the class interval 38 - 40?
a. 38
b.39
C. 40
19. The variance of the weights of the Grade 7 students is
a. 11.02
b.10.06
C. 9.21
20. What is the standard deviation of their weights?
a. 2.14
b.3.09
c. 3.17
d. 40.5
?
d. 9.10
d. 4.11