(x + 0.5y)/n*100
30. Statistics exam scores for 20 students are as follows:
50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93
Find the mode.
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72
if the distribution of data is skewed to the left, the mean is less than the median, which is often less
than the mode The distribution of data is skewed to the right, the mode is often less than the median, which is less than
The mean.
In a perfectly symmetrical distribution, the mean and the median are the same.
Deviation.
35.he average of the squares of the deviations is
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variance
36. Use the following data (first exam scores) from Susan Dean's spring pre-calculus class:
33; 42; 49; 49; 53; 55; 55; 61; 63; 67; 68; 68; 69; 69; 72; 73; 74; 78; 80; 83; 88; 88; 88; 90; 92; 94; 94; 94; 94; 96; 100
Calculate the sample mean
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73.5
37.For Normal Distribution which ii true
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Do'stlaringiz bilan baham: |
