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Worksheets9-8-3 Mean of 2 data set
Total questions: 113
Worksheet time: 9hrs 25mins
Name
Class
Date
1.
The mean of 8 numbers is 12. If 4 more numbers with a mean of 18 are added to the set, what is the new mean?
a)
14
b)
16
c)
13
d)
15
e)
17
2.
A set of 15 numbers has a mean of 8. If the mean of the first 10 numbers is 6, what is the mean of the last 5 numbers?
a)
16
b)
14
c)
10
d)
12
e)
18
3.
The mean of 7 numbers is 14. If one more number with a mean of 20 is added to the set, what is the new mean?
a)
15
b)
16
c)
18
d)
19
e)
22
4.
There are 12 numbers with a mean of 9 and 8 numbers with a mean of 14. What is the mean of all 20 numbers?
a)
10
b)
11
c)
12
d)
13
e)
15
5.
If the mean of 6 numbers is 3 and the mean of another 6 numbers is 6, what is the mean of all 12 numbers?
a)
4
b)
5
c)
7
d)
8
e)
9
6.
A group of 9 numbers has a mean of 7. If the mean of the first 5 numbers is 5, what is the mean of the last 4 numbers?
a)
11
b)
10
c)
6
d)
9
e)
12
7.
The mean of 5 numbers is 8. If one number with a mean of 16 is added to the set, what is the new mean?
a)
9
b)
10
c)
12
d)
14
e)
15
8.
There are 7 numbers with a mean of 6 and 9 numbers with a mean of 12. What is the mean of all 16 numbers?
a)
9
b)
10
c)
11
d)
13
e)
14
9.
If the mean of 4 numbers is 10 and the mean of another 4 numbers is 16, what is the mean of all 8 numbers?
a)
13
b)
12
c)
14
d)
15
e)
17
10.
The mean of 11 numbers is 9. If 3 more numbers with a mean of 15 are added to the set, what is the new mean?
a)
10
b)
11
c)
12
d)
13
e)
14
11.
A set of 14 numbers has a mean of 11. If the mean of the first 6 numbers is 8, what is the mean of the last 8 numbers?
a)
12
b)
10
c)
9
d)
13
e)
15
12.
The mean of 6 numbers is 7. If two more numbers with a mean of 18 are added to the set, what is the new mean?
a)
9
b)
8
c)
10
d)
11
e)
12
13.
There are 8 numbers with a mean of 5 and 12 numbers with a mean of 9. What is the mean of all 20 numbers?
a)
7
b)
6
c)
8
d)
10
e)
11
14.
If the mean of 3 numbers is 4 and the mean of another 3 numbers is 6, what is the mean of all 6 numbers?
a)
5
b)
3
c)
7
d)
8
e)
9
15.
A group of 10 numbers has a mean of 8. If the mean of the first 7 numbers is 6, what is the mean of the last 3 numbers?
a)
14
b)
12
c)
10
d)
8
e)
16
16.
The mean of 7 numbers is 11. If one number with a mean of 15 is added to the set, what is the new mean?
a)
12
b)
13
c)
14
d)
16
e)
18
17.
There are 9 numbers with a mean of 10 and 11 numbers with a mean of 16. What is the mean of all 20 numbers?
a)
13
b)
12
c)
14
d)
15
e)
17
18.
If the mean of 5 numbers is 6 and the mean of another 5 numbers is 9, what is the mean of all 10 numbers?
a)
7
b)
8
c)
10
d)
11
e)
12
19.
The mean of 12 numbers is 8. If 6 more numbers with a mean of 14 are added to the set, what is the new mean?
a)
9
b)
10
c)
11
d)
12
e)
13
20.
A set of 16 numbers has a mean of 7. If the mean of the first 8 numbers is 5, what is the mean of the last 8 numbers?
a)
9
b)
6
c)
7
d)
8
e)
10
21.
The mean of 4 numbers is 9. If three more numbers with a mean of 12 are added to the set, what is the new mean?
a)
10
b)
11
c)
13
d)
14
e)
15
22.
There are 6 numbers with a mean of 8 and 14 numbers with a mean of 11. What is the mean of all 20 numbers?
a)
10
b)
9
c)
12
d)
13
e)
14
23.
If the mean of 7 numbers is 5 and the mean of another 7 numbers is 7, what is the mean of all 14 numbers?
a)
6
b)
4
c)
8
d)
9
e)
10
24.
A group of 13 numbers has a mean of 6. If the mean of the first 9 numbers is 4, what is the mean of the last 4 numbers?
a)
9
b)
5
c)
6
d)
7
e)
8
25.
The mean of 8 numbers is 10. If one number with a mean of 13 is added to the set, what is the new mean?
a)
11
b)
12
c)
14
d)
15
e)
16
26.
There are 10 numbers with a mean of 7 and 10 numbers with a mean of 12. What is the mean of all 20 numbers?
a)
9
b)
8
c)
10
d)
11
e)
13
27.
If the mean of 6 numbers is 6 and the mean of another 6 numbers is 8, what is the mean of all 12 numbers?
a)
7
b)
5
c)
9
d)
10
e)
11
28.
A set of 11 numbers has a mean of 9. If the mean of the first 7 numbers is 7, what is the mean of the last 4 numbers?
a)
11
b)
8
c)
9
d)
10
e)
12
29.
The mean of 9 numbers is 11. If two more numbers with a mean of 14 are added to the set, what is the new mean?
a)
12
b)
13
c)
15
d)
16
e)
17
30.
There are 5 numbers with a mean of 8 and 15 numbers with a mean of 13. What is the mean of all 20 numbers?
a)
11
b)
9
c)
10
d)
12
e)
14
31.
If the mean of 4 numbers is 7 and the mean of another 4 numbers is 10, what is the mean of all 8 numbers?
a)
8
b)
6
c)
9
d)
11
e)
12
32.
The mean of 10 numbers is 9. If 5 more numbers with a mean of 15 are added to the set, what is the new mean?
a)
10
b)
11
c)
12
d)
13
e)
14
33.
A group of 14 numbers has a mean of 10. If the mean of the first 8 numbers is 8, what is the mean of the last 6 numbers?
a)
12
b)
9
c)
11
d)
13
e)
14
34.
The mean of 7 numbers is 13. If one number with a mean of 16 is added to the set, what is the new mean?
a)
14
b)
15
c)
17
d)
18
e)
19
35.
There are 8 numbers with a mean of 9 and 12 numbers with a mean of 14. What is the mean of all 20 numbers?
a)
12
b)
10
c)
11
d)
13
e)
15
36.
If the mean of 5 numbers is 5 and the mean of another 5 numbers is 10, what is the mean of all 10 numbers?
a)
7
b)
6
c)
8
d)
9
e)
11
37.
A group of 12 numbers has a mean of 7. If the mean of the first 6 numbers is 6, what is the mean of the last 6 numbers?
a)
8
b)
5
c)
7
d)
9
e)
10
38.
The mean of 6 numbers is 10. If two more numbers with a mean of 15 are added to the set, what is the new mean?
a)
11
b)
12
c)
13
d)
14
e)
16
39.
There are 9 numbers with a mean of 6 and 11 numbers with a mean of 11. What is the mean of all 20 numbers?
a)
8
b)
7
c)
9
d)
10
e)
12
40.
If the mean of 7 numbers is 7 and the mean of another 7 numbers is 8, what is the mean of all 14 numbers?
a)
7
b)
6
c)
8
d)
9
e)
10
41.
A set of 13 numbers has a mean of 8. If the mean of the first 7 numbers is 7, what is the mean of the last 6 numbers?
a)
9
b)
8
c)
10
d)
11
e)
12
42.
The mean of 8 numbers is 12. If one number with a mean of 18 is added to the set, what is the new mean?
a)
13
b)
14
c)
15
d)
16
e)
17
43.
There are 10 numbers with a mean of 7 and 10 numbers with a mean of 13. What is the mean of all 20 numbers?
a)
10
b)
8
c)
9
d)
11
e)
12
44.
If the mean of 6 numbers is 5 and the mean of another 6 numbers is 9, what is the mean of all 12 numbers?
a)
7
b)
6
c)
8
d)
10
e)
11
45.
A set of 11 numbers has a mean of 10. If the mean of the first 6 numbers is 9, what is the mean of the last 5 numbers?
a)
11
b)
10
c)
12
d)
13
e)
14
46.
The mean of 9 numbers is 9. If one more number with a mean of 15 is added to the set, what is the new mean?
a)
10
b)
11
c)
12
d)
13
e)
14
47.
There are 5 numbers with a mean of 7 and 15 numbers with a mean of 11. What is the mean of all 20 numbers?
a)
10
b)
8
c)
9
d)
12
e)
13
48.
If the mean of 4 numbers is 8 and the mean of another 4 numbers is 12, what is the mean of all 8 numbers?
a)
10
b)
9
c)
11
d)
13
e)
14
49.
The mean of 10 numbers is 10. If 5 more numbers with a mean of 15 are added to the set, what is the new mean?
a)
11
b)
12
c)
13
d)
14
e)
16
50.
A group of 14 numbers has a mean of 8. If the mean of the first 8 numbers is 7, what is the mean of the last 6 numbers?
a)
9
b)
8
c)
10
d)
11
e)
12
51.
The mean of 7 numbers is 12. If one number with a mean of 16 is added to the set, what is the new mean?
a)
13
b)
14
c)
15
d)
17
e)
18
52.
The mean of 25 numbers is 18. If the mean of the first 15 numbers is 16, what is the mean of the last 10 numbers?
a)
20
b)
15
c)
18
d)
22
e)
25
53.
The mean of 20 numbers is 14. If the mean of the first 10 numbers is 12, what is the mean of the last 10 numbers?
a)
16
b)
10
c)
14
d)
18
e)
22
54.
The mean of 30 numbers is 24. If the mean of the first 20 numbers is 22, what is the mean of the last 10 numbers?
a)
28
b)
20
c)
24
d)
26
e)
30
55.
The mean of 35 numbers is 28. If the mean of the first 25 numbers is 26, what is the mean of the last 10 numbers?
a)
32
b)
25
c)
28
d)
30
e)
34
56.
The mean of 18 numbers is 14. If the mean of the first 8 numbers is 12, what is the mean of the last 10 numbers?
a)
16
b)
12
c)
14
d)
18
e)
22
57.
The mean of 24 numbers is 20. If the mean of the first 14 numbers is 18, what is the mean of the last 10 numbers?
a)
22
b)
14
c)
20
d)
24
e)
26
58.
The mean of 40 numbers is 30. If the mean of the first 30 numbers is 28, what is the mean of the last 10 numbers?
a)
38
b)
30
c)
28
d)
32
e)
34
59.
The mean of 22 numbers is 16. If the mean of the first 12 numbers is 14, what is the mean of the last 10 numbers?
a)
18
b)
12
c)
16
d)
20
e)
24
60.
The mean of 28 numbers is 24. If the mean of the first 18 numbers is 22, what is the mean of the last 10 numbers?
a)
26
b)
18
c)
22
d)
28
e)
30
61.
The mean of 33 numbers is 27. If the mean of the first 23 numbers is 24, what is the mean of the last 10 numbers?
a)
30
b)
23
c)
27
d)
28
e)
32
62.
The mean of 16 numbers is 10. If the mean of the first 6 numbers is 8, what is the mean of the last 10 numbers?
a)
12
b)
6
c)
8
d)
14
e)
16
63.
The mean of 26 numbers is 18. If the mean of the first 16 numbers is 15, what is the mean of the last 10 numbers?
a)
22
b)
15
c)
18
d)
20
e)
24
64.
The mean of 38 numbers is 32. If the mean of the first 28 numbers is 30, what is the mean of the last 10 numbers?
a)
34
b)
28
c)
30
d)
36
e)
38
65.
The mean of 14 numbers is 8. If the mean of the first 4 numbers is 6, what is the mean of the last 10 numbers?
a)
10
b)
4
c)
6
d)
12
e)
14
66.
The mean of 30 numbers is 22. If the mean of the first 20 numbers is 20, what is the mean of the last 10 numbers?
a)
24
b)
20
c)
22
d)
26
e)
30
67.
The mean of 44 numbers is 36. If the mean of the first 34 numbers is 34, what is the mean of the last 10 numbers?
a)
38
b)
34
c)
36
d)
40
e)
42
68.
The mean of 19 numbers is 14. If the mean of the first 9 numbers is 12, what is the mean of the last 10 numbers?
a)
16
b)
9
c)
12
d)
18
e)
20
69.
The mean of 15 numbers is 12. If the mean of the first 5 numbers is 10, what is the mean of the last 10 numbers?
a)
14
b)
5
c)
10
d)
15
e)
18
70.
The mean of 23 numbers is 20. If the mean of the first 13 numbers is 18, what is the mean of the last 10 numbers?
a)
22
b)
13
c)
18
d)
21
e)
24
71.
The mean of 36 numbers is 28. If the mean of the first 26 numbers is 26, what is the mean of the last 10 numbers?
a)
30
b)
26
c)
28
d)
32
e)
34
72.
The mean of 21 numbers is 15. If the mean of the first 11 numbers is 13, what is the mean of the last 10 numbers?
a)
17
b)
11
c)
13
d)
16
e)
18
73.
The mean of 29 numbers is 24. If the mean of the first 19 numbers is 22, what is the mean of the last 10 numbers?
a)
26
b)
19
c)
22
d)
25
e)
28
74.
The mean of 17 numbers is 12. If the mean of the first 7 numbers is 10, what is the mean of the last 10 numbers?
a)
14
b)
7
c)
10
d)
13
e)
15
75.
The mean of 32 numbers is 26. If the mean of the first 22 numbers is 24, what is the mean of the last 10 numbers?
a)
28
b)
22
c)
24
d)
27
e)
30
76.
The mean of 27 numbers is 20. If the mean of the first 17 numbers is 18, what is the mean of the last 10 numbers?
a)
22
b)
17
c)
18
d)
21
e)
24
77.
The mean of 13 numbers is 10. If the mean of the first 3 numbers is 8, what is the mean of the last 10 numbers?
a)
12
b)
3
c)
8
d)
10
e)
14
78.
The mean of 22 numbers is 18. If the mean of the first 12 numbers is 16, what is the mean of the last 10 numbers?
a)
20
b)
12
c)
16
d)
22
e)
24
79.
The mean of 34 numbers is 28. If the mean of the first 24 numbers is 26, what is the mean of the last 10 numbers?
a)
32
b)
24
c)
26
d)
30
e)
34
80.
The mean of 16 numbers is 12. If the mean of the first 6 numbers is 10, what is the mean of the last 10 numbers?
a)
14
b)
6
c)
10
d)
15
e)
18
81.
The mean of 25 numbers is 20. If the mean of the first 15 numbers is 18, what is the mean of the last 10 numbers?
a)
22
b)
15
c)
18
d)
24
e)
26
82.
The mean of 27 numbers is 22. If the mean of the first 17 numbers is 20, what is the mean of the last 10 numbers?
a)
24
b)
17
c)
20
d)
23
e)
26
83.
The mean of 19 numbers is 14. If the mean of the first 9 numbers is 12, what is the mean of the last 10 numbers?
a)
16
b)
9
c)
12
d)
18
e)
20
84.
The mean of 25 numbers is 15. If one number is added to the data, the mean of the 26 numbers is 15, what is the value of the new number?
a)
15
b)
10
c)
20
d)
25
e)
30
85.
The mean of 30 numbers is 12. If one number is added to the data, the mean of the 31 numbers is 12, what is the value of the new number?
a)
12
b)
5
c)
15
d)
20
e)
25
86.
The mean of 35 numbers is 18. If one number is added to the data, the mean of the 36 numbers is 18, what is the value of the new number?
a)
18
b)
10
c)
20
d)
25
e)
30
87.
The mean of 22 numbers is 8. If one number is added to the data, the mean of the 23 numbers is 8, what is the value of the new number?
a)
8
b)
4
c)
6
d)
10
e)
12
88.
The mean of 28 numbers is 16. If one number is added to the data, the mean of the 29 numbers is 16, what is the value of the new number?
a)
16
b)
8
c)
12
d)
20
e)
24
89.
The mean of 33 numbers is 14. If one number is added to the data, the mean of the 34 numbers is 14, what is the value of the new number?
a)
14
b)
6
c)
8
d)
10
e)
16
90.
The mean of 18 numbers is 9. If one number is added to the data, the mean of the 19 numbers is 9, what is the value of the new number?
a)
9
b)
5
c)
10
d)
15
e)
20
91.
The mean of 24 numbers is 11. If one number is added to the data, the mean of the 25 numbers is 11, what is the value of the new number?
a)
11
b)
6
c)
12
d)
16
e)
20
92.
The mean of 40 numbers is 22. If one number is added to the data, the mean of the 41 numbers is 22, what is the value of the new number?
a)
22
b)
15
c)
20
d)
25
e)
30
93.
The mean of 19 numbers is 7. If one number is added to the data, the mean of the 20 numbers is 7, what is the value of the new number?
a)
7
b)
4
c)
6
d)
10
e)
12
94.
The mean of 26 numbers is 13. If one number is added to the data, the mean of the 27 numbers is 13, what is the value of the new number?
a)
13
b)
7
c)
10
d)
15
e)
18
95.
The mean of 38 numbers is 20. If one number is added to the data, the mean of the 39 numbers is 20, what is the value of the new number?
a)
20
b)
12
c)
16
d)
24
e)
28
96.
The mean of 14 numbers is 6. If one number is added to the data, the mean of the 15 numbers is 6, what is the value of the new number?
a)
6
b)
3
c)
5
d)
8
e)
10
97.
The mean of 30 numbers is 16. If one number is added to the data, the mean of the 31 numbers is 16, what is the value of the new number?
a)
16
b)
8
c)
12
d)
20
e)
24
98.
The mean of 44 numbers is 24. If one number is added to the data, the mean of the 45 numbers is 24, what is the value of the new number?
a)
24
b)
15
c)
20
d)
25
e)
30
99.
The mean of 19 numbers is 10. If one number is added to the data, the mean of the 20 numbers is 10, what is the value of the new number?
a)
10
b)
5
c)
12
d)
15
e)
20
100.
The mean of 27 numbers is 14. If one number is added to the data, the mean of the 28 numbers is 14, what is the value of the new number?
a)
14
b)
7
c)
10
d)
16
e)
18
101.
The mean of 13 numbers is 8. If one number is added to the data, the mean of the 14 numbers is 8, what is the value of the new number?
a)
8
b)
4
c)
6
d)
10
e)
12
102.
The mean of 22 numbers is 12. If one number is added to the data, the mean of the 23 numbers is 12, what is the value of the new number?
a)
12
b)
6
c)
10
d)
16
e)
20
103.
The mean of 34 numbers is 18. If one number is added to the data, the mean of the 35 numbers is 18, what is the value of the new number?
a)
18
b)
10
c)
12
d)
20
e)
24
104.
The mean of 21 numbers is 11. If one number is added to the data, the mean of the 22 numbers is 11, what is the value of the new number?
a)
11
b)
5
c)
12
d)
15
e)
20
105.
The mean of 29 numbers is 15. If one number is added to the data, the mean of the 30 numbers is 15, what is the value of the new number?
a)
15
b)
8
c)
10
d)
16
e)
18
106.
The mean of 17 numbers is 9. If one number is added to the data, the mean of the 18 numbers is 9, what is the value of the new number?
a)
9
b)
4
c)
6
d)
10
e)
12
107.
The mean of 32 numbers is 17. If one number is added to the data, the mean of the 33 numbers is 17, what is the value of the new number?
a)
17
b)
8
c)
12
d)
20
e)
24
108.
The mean of 27 numbers is 13. If one number is added to the data, the mean of the 28 numbers is 13, what is the value of the new number?
a)
13
b)
6
c)
10
d)
15
e)
18
109.
The mean of 15 numbers is 8. If one number is added to the data, the mean of the 16 numbers is 8, what is the value of the new number?
a)
8
b)
4
c)
6
d)
10
e)
12
110.
The mean of 23 numbers is 12. If one number is added to the data, the mean of the 24 numbers is 12, what is the value of the new number?
a)
12
b)
6
c)
10
d)
16
e)
20
111.
The mean of 36 numbers is 20. If one number is added to the data, the mean of the 37 numbers is 20, what is the value of the new number?
a)
20
b)
10
c)
12
d)
24
e)
28
112.
The mean of 19 numbers is 11. If one number is added to the data, the mean of the 20 numbers is 11, what is the value of the new number?
a)
11
b)
5
c)
12
d)
15
e)
20
113.
The mean of 26 numbers is 14. If one number is added to the data, the mean of the 27 numbers is 14, what is the value of the new number?
a)
14
b)
7
c)
10
d)
16
e)
18
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