Probability And Statistics Worksheets Page 3
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9
Are You Ready?
Refresh Your Math Skills for Chapter 9
The skills on these two pages are ones you have already learned. Stretch your
memory and complete the exercises. For additional practice on these and more
prerequisite skills, see pages 654-661.
P
, D
,
F
ERCENTS
ECIMALS
AND
RACTIONS
Convert each fraction or decimal to a percent. Round to the nearest tenth if necessary.
3
7
2
1.
2. 0.86
3.
4. 0.93
5.
4
8
3
3
7
6. 0.5
7.
8. 0.42
9.
10. 0.38
8
1
6
1
6
2
7
11.
12. 0.64576
13.
14. 0.19823
15.
6
2
1
4
6
Convert each percent to a decimal. Round to the nearest thousandth if necessary.
16. 46%
17. 83%
18. 29%
19. 15%
20. 12%
21. 18.76%
22. 9.3825%
23. 78.6215%
24. 64.93%
25. 21.748%
Convert each percent to a fraction in lowest terms.
26. 80%
27. 50%
28. 68%
29. 92%
30. 75%
31. 64.2%
32. 39.8%
33. 20%
34. 19.6%
35. 51.9%
M
C
T
EASURES OF
ENTRAL
ENDENCY
Find the mean, median, mode and range of each set of data. Round to the nearest
tenth if necessary.
36. 74 75 79 76 77
37. 30 32 34 36 38
74 78 72 71
39 37 35 34 33
38. 40 48 52 47 56 49
39. 17 12 13 16 22 21
43 55 46 48 51
19 18 14 20 15 11
40. 88 87 81 92 86 87 89
41. 62 63 67 68 65 69 64
90 93 91 85 92 94
61 65 66 60 67 65 63
R
F
EDUCING
RACTIONS
Determine the greatest common factor of the numerator and denominator.
Divide both the numerator and denominator by the factor to write the fraction
in lowest terms.
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1
9
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2
4
3
4
42.
43.
44.
45.
46.
47.
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4
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7
5
2
1
10
1
44
1
7
1
3
1
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1
7
1
5
48.
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50.
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53.
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382
Chapter 9 Probability and Statistics
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