The following relative frequency distribution was constructed
from a population of 200. Calculate the population mean, the
population variance, and the population standard deviation.
(Negative values should be indicated by a minus sign. Round
intermediate calculations to at least 4 decimal places and final
answers to 2 decimal places.)
Class | Relative Frequency |
−20 up to −10 | 0.35 |
−10 up to 0 | 0.20 |
0 up to 10 | 0.40 |
10 up to 20 | 0.05 |
pop mean =
pop variance=
pop standard deviation=
The following relative frequency distribution was constructed from a population of 200. Calculate the population mean,...
The following relative frequency distribution was constructed from a population of 300. Calculate the population mean, the population variance, and the population standard deviation. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Class Relative Frequency −20 up to −10 0.08 −10 up to 0 0.22 0 up to 10 0.38 10 up to 20 0.32 Population mean Population variance Population standard deviation
The following relative frequency distribution was constructed from a population of 250. Calculate the population mean, the population variance, and the population standard deviation.(Negative values should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.) Class Relative Frequency −20 up to −10 0.30 −10 up to 0 0.24 0 up to 10 0.34 10 up to 20 0.12 Population mean Population variance Population standard deviation
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Consider a sample with 10 observations of 11, –3, 8, 8, 10, 1, –2, 13, 8, and –4. Use z-scores to determine if there are any outliers in the data; assume a bell-shaped distribution. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) The z-score for the smallest observation The z-score for the largest observation There are outliers or no outliers in the data. The historical returns on a portfolio had...
Consider a sample with 10 observations of 11, –3, 8, 8, 10, 1, –2, 13, 8, and –4. Use z-scores to determine if there are any outliers in the data; assume a bell-shaped distribution. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) The z-score for the smallest observation The z-score for the largest observation There are outliers or no outliers in the data. The historical returns on a portfolio had...
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