Mean 70.83333333 Standard error 1.19708251 Median 70.65810302 Mode Standard deviation 5.07879096 Sample variance 25.79411765 Kurtosis 0.11837 Skewness -0.321108665 R 19 Minimum Maximum um 1275 Count Confidence level说 明 Mean 70.83333333 Standard Error 1.19708251 Median 70.65810302 Mode 75 Standard Deviation 5.078790963 Sample Variance 25.79411765 Kurtosis -0.11837 Skewness -0.321108665 Range 19 Minimum 60 Maximum 79 Sum 1275 Count 18 Confidence Level 2.525623328