CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 24 values has mean 59. When 98 is included, what is the resulting mean?
A. 59.56
B. 61.56
C. 60.56
D. 62.56
Correct Answer: C
Resulting mean = (24×59+98)/25 = 60.56.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 23 values has mean 58. When 96 is included, what is the resulting mean?
A. 61.58
B. 60.58
C. 58.58
D. 59.58
Correct Answer: D
Resulting mean = (23×58+96)/24 = 59.58.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 22 values has mean 57. When 94 is included, what is the resulting mean?
A. 59.61
B. 57.61
C. 58.61
D. 60.61
Correct Answer: C
Resulting mean = (22×57+94)/23 = 58.61.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 21 values has mean 56. When 92 is included, what is the resulting mean?
A. 58.64
B. 59.64
C. 57.64
D. 56.64
Correct Answer: C
Resulting mean = (21×56+92)/22 = 57.64.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 20 values has mean 55. When 90 is included, what is the resulting mean?
A. 58.67
B. 55.67
C. 57.67
D. 56.67
Correct Answer: D
Resulting mean = (20×55+90)/21 = 56.67.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 19 values has mean 54. When 88 is included, what is the resulting mean?
A. 57.7
B. 54.7
C. 56.7
D. 55.7
Correct Answer: D
Resulting mean = (19×54+88)/20 = 55.7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 18 values has mean 53. When 86 is included, what is the resulting mean?
A. 54.74
B. 55.74
C. 56.74
D. 53.74
Correct Answer: A
Resulting mean = (18×53+86)/19 = 54.74.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 17 values has mean 52. When 84 is included, what is the resulting mean?
A. 53.78
B. 55.78
C. 54.78
D. 52.78
Correct Answer: A
Resulting mean = (17×52+84)/18 = 53.78.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 16 values has mean 51. When 82 is included, what is the resulting mean?
A. 54.82
B. 51.82
C. 52.82
D. 53.82
Correct Answer: C
Resulting mean = (16×51+82)/17 = 52.82.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A set of 15 values has mean 50. When 80 is included, what is the resulting mean?
A. 52.88
B. 51.88
C. 50.88
D. 53.88
Correct Answer: B
Resulting mean = (15×50+80)/16 = 51.88.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 21 positive even numbers have what average?
A. 24
B. 22
C. 26
D. 20
Correct Answer: B
Mean = (2+42)/2 = 22.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 20 positive odd numbers have what average?
A. 20
B. 22
C. 18
D. 24
Correct Answer: A
Mean = (1+39)/2 = 20.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 19 positive even numbers have what average?
A. 22
B. 20
C. 24
D. 18
Correct Answer: B
Mean = (2+38)/2 = 20.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 18 positive odd numbers have what average?
A. 22
B. 18
C. 20
D. 16
Correct Answer: B
Mean = (1+35)/2 = 18.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 17 positive even numbers have what average?
A. 16
B. 22
C. 20
D. 18
Correct Answer: D
Mean = (2+34)/2 = 18.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 16 positive odd numbers have what average?
A. 18
B. 14
C. 16
D. 20
Correct Answer: C
Mean = (1+31)/2 = 16.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 15 positive even numbers have what average?
A. 18
B. 20
C. 16
D. 14
Correct Answer: C
Mean = (2+30)/2 = 16.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 14 positive odd numbers have what average?
A. 18
B. 14
C. 16
D. 12
Correct Answer: B
Mean = (1+27)/2 = 14.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 13 positive even numbers have what average?
A. 18
B. 14
C. 12
D. 16
Correct Answer: B
Mean = (2+26)/2 = 14.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The first 12 positive odd numbers have what average?
A. 12
B. 16
C. 14
D. 10
Correct Answer: A
Mean = (1+23)/2 = 12.