CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The mean height of a group is 158 cm. What is the same mean expressed in metres?
A. 1.78 m
B. 1.48 m
C. 1.58 m
D. 1.68 m
Correct Answer: C
158 cm ÷ 100 = 1.58 m.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The mean height of a group is 156 cm. What is the same mean expressed in metres?
A. 1.76 m
B. 1.46 m
C. 1.66 m
D. 1.56 m
Correct Answer: D
156 cm ÷ 100 = 1.56 m.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The mean height of a group is 154 cm. What is the same mean expressed in metres?
A. 1.74 m
B. 1.44 m
C. 1.64 m
D. 1.54 m
Correct Answer: D
154 cm ÷ 100 = 1.54 m.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The mean height of a group is 152 cm. What is the same mean expressed in metres?
A. 1.72 m
B. 1.42 m
C. 1.62 m
D. 1.52 m
Correct Answer: D
152 cm ÷ 100 = 1.52 m.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The mean height of a group is 150 cm. What is the same mean expressed in metres?
A. 1.4 m
B. 1.5 m
C. 1.7 m
D. 1.6 m
Correct Answer: B
150 cm ÷ 100 = 1.5 m.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 58 is decreased by 30%. What is the new mean?
A. 42.6
B. 44.6
C. 40.6
D. 38.6
Correct Answer: C
Mean decreases by the same 30%: 40.6.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 56 is increased by 25%. What is the new mean?
A. 68
B. 70
C. 74
D. 72
Correct Answer: B
Mean increases by the same 25%: 70.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 54 is decreased by 20%. What is the new mean?
A. 47.2
B. 45.2
C. 41.2
D. 43.2
Correct Answer: D
Mean decreases by the same 20%: 43.2.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 52 is increased by 15%. What is the new mean?
A. 61.8
B. 57.8
C. 63.8
D. 59.8
Correct Answer: D
Mean increases by the same 15%: 59.8.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 50 is decreased by 10%. What is the new mean?
A. 47
B. 49
C. 45
D. 43
Correct Answer: C
Mean decreases by the same 10%: 45.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 48 is increased by 30%. What is the new mean?
A. 60.4
B. 62.4
C. 64.4
D. 66.4
Correct Answer: B
Mean increases by the same 30%: 62.4.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 46 is decreased by 25%. What is the new mean?
A. 32.5
B. 36.5
C. 38.5
D. 34.5
Correct Answer: D
Mean decreases by the same 25%: 34.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 44 is increased by 20%. What is the new mean?
A. 56.8
B. 54.8
C. 50.8
D. 52.8
Correct Answer: D
Mean increases by the same 20%: 52.8.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 42 is decreased by 15%. What is the new mean?
A. 39.7
B. 37.7
C. 35.7
D. 33.7
Correct Answer: C
Mean decreases by the same 15%: 35.7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Every observation in a dataset with mean 40 is increased by 10%. What is the new mean?
A. 48
B. 42
C. 46
D. 44
Correct Answer: D
Mean increases by the same 10%: 44.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The reported mean of 18 observations is 54. Values 78 and 44 should be 70 and 49. What is the corrected mean?
A. 54.33
B. 54.83
C. 53.33
D. 53.83
Correct Answer: D
Apply both corrections to the total; corrected mean = 53.83.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The reported mean of 17 observations is 53. Values 76 and 43 should be 69 and 48. What is the corrected mean?
A. 52.38
B. 53.88
C. 52.88
D. 53.38
Correct Answer: C
Apply both corrections to the total; corrected mean = 52.88.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The reported mean of 16 observations is 52. Values 74 and 42 should be 68 and 47. What is the corrected mean?
A. 51.94
B. 52.94
C. 51.44
D. 52.44
Correct Answer: A
Apply both corrections to the total; corrected mean = 51.94.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The reported mean of 15 observations is 51. Values 72 and 41 should be 63 and 46. What is the corrected mean?
A. 51.73
B. 50.73
C. 50.23
D. 51.23
Correct Answer: B
Apply both corrections to the total; corrected mean = 50.73.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The reported mean of 14 observations is 50. Values 70 and 40 should be 62 and 45. What is the corrected mean?
A. 49.79
B. 50.29
C. 49.29
D. 50.79
Correct Answer: A
Apply both corrections to the total; corrected mean = 49.79.