math
posted by Anonymous .
10. For questions 1013, use the following data:
13 29 41 60 89 14 26 53 7 14
What is the arithmetic mean of the data? (Points: 5)
20
14
34.6
82
11. What is the range of the data? (Points: 5)
14
34.6
82
50
12. What is the variance of the data? (Points: 5)
231.04
616.64
685.16
1,197.16
13. What is the standard deviation of the data? (Points: 5)
0.2
26.18
24.83
34.61

math 
PsyDAG
Find the mean first = sum of scores/number of scores
Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance
Range = highest scorelowest score
I'll let you do the calculations.
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