CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The sum of a set is 242 and its mean is 22. How many observations are in the set?
A. 11
B. 10
C. 13
D. 12
Correct Answer: A
Count = Sum ÷ Mean = 242 ÷ 22 = 11.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The sum of a set is 200 and its mean is 20. How many observations are in the set?
A. 12
B. 9
C. 10
D. 11
Correct Answer: C
Count = Sum ÷ Mean = 200 ÷ 20 = 10.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The sum of a set is 162 and its mean is 18. How many observations are in the set?
A. 8
B. 11
C. 9
D. 10
Correct Answer: C
Count = Sum ÷ Mean = 162 ÷ 18 = 9.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The sum of a set is 128 and its mean is 16. How many observations are in the set?
A. 9
B. 8
C. 10
D. 7
Correct Answer: B
Count = Sum ÷ Mean = 128 ÷ 16 = 8.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The sum of a set is 98 and its mean is 14. How many observations are in the set?
A. 7
B. 9
C. 8
D. 6
Correct Answer: A
Count = Sum ÷ Mean = 98 ÷ 14 = 7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 8 observations whose sum is 396. Determine its mean.
A. 49.5
B. 51.5
C. 47.5
D. 53.5
Correct Answer: A
Mean = 396 ÷ 8 = 49.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 7 observations whose sum is 372. Determine its mean.
A. 51.14
B. 55.14
C. 53.14
D. 57.14
Correct Answer: C
Mean = 372 ÷ 7 = 53.14.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 6 observations whose sum is 348. Determine its mean.
A. 62
B. 56
C. 60
D. 58
Correct Answer: D
Mean = 348 ÷ 6 = 58.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 12 observations whose sum is 324. Determine its mean.
A. 27
B. 25
C. 31
D. 29
Correct Answer: A
Mean = 324 ÷ 12 = 27.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 11 observations whose sum is 300. Determine its mean.
A. 25.27
B. 31.27
C. 29.27
D. 27.27
Correct Answer: D
Mean = 300 ÷ 11 = 27.27.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 10 observations whose sum is 276. Determine its mean.
A. 31.6
B. 25.6
C. 29.6
D. 27.6
Correct Answer: D
Mean = 276 ÷ 10 = 27.6.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 9 observations whose sum is 252. Determine its mean.
A. 30
B. 28
C. 26
D. 32
Correct Answer: B
Mean = 252 ÷ 9 = 28.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 8 observations whose sum is 228. Determine its mean.
A. 32.5
B. 26.5
C. 28.5
D. 30.5
Correct Answer: C
Mean = 228 ÷ 8 = 28.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 7 observations whose sum is 204. Determine its mean.
A. 27.14
B. 33.14
C. 29.14
D. 31.14
Correct Answer: C
Mean = 204 ÷ 7 = 29.14.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A dataset contains 6 observations whose sum is 180. Determine its mean.
A. 30
B. 28
C. 32
D. 34
Correct Answer: A
Mean = 180 ÷ 6 = 30.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Find the arithmetic mean of these 10 observations: 42, 45, 48, 40, 43, 46, 49, 41, 44, 47.
A. 48.5
B. 42.5
C. 44.5
D. 46.5
Correct Answer: C
Add all 10 observations and divide by 10: 445 ÷ 10 = 44.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Find the arithmetic mean of these 8 observations: 39, 42, 45, 37, 40, 43, 46, 38.
A. 39.25
B. 43.25
C. 45.25
D. 41.25
Correct Answer: D
Add all 8 observations and divide by 8: 330 ÷ 8 = 41.25.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Find the arithmetic mean of these 6 observations: 36, 39, 42, 45, 37, 40.
A. 39.83
B. 41.83
C. 37.83
D. 43.83
Correct Answer: A
Add all 6 observations and divide by 6: 239 ÷ 6 = 39.83.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Find the arithmetic mean of these 10 observations: 33, 36, 39, 42, 34, 37, 40, 43, 35, 38.
A. 39.7
B. 41.7
C. 35.7
D. 37.7
Correct Answer: D
Add all 10 observations and divide by 10: 377 ÷ 10 = 37.7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Find the arithmetic mean of these 8 observations: 41, 33, 36, 39, 31, 34, 37, 40.
A. 38.38
B. 36.38
C. 40.38
D. 34.38
Correct Answer: B
Add all 8 observations and divide by 8: 291 ÷ 8 = 36.38.