A statistics class of 40 students took a quiz. The highest possible score was 4 points. 10 students scored 4 points, 12 students scored 3 points, 8 students scored 2 point, 6 students scored 1 point, and 4 students scored 0. Compute the mean, median, and standard deviation of the scores.

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Q: Calculate the mean, standard deviation, and variance for the following five scores: 9, 4, 7, 1, 4.

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Q: Find the range and standard deviation of the set of data. 12, 9, 7, 11, 11 O

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Q: 3. Given the sample variance of a distribution, explain how to find the standard deviation.

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A: The detailed solution is as follows below:

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.