The table shows the scores of 20 people who took a paramedics licensing test. Find the mean and standard deviation for these data. The mean of the data is The standard deviation is approximately Round to three decimal places as needed.) ... Score Frequency 74 7 75 1 79 3 86 6 88 2 98 1 n

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A: XX220400864151441936124525∑x=66∑x2=998

Q: 20 40 60 80 100

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Q: Test Score Frequency 90 80 4 70 60 6 50 3

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A: 758449325948698134677850464883322954218347589115