{"kind":"user","text":"NIST Statistical Reference Datasets, univariate summary statistics, problem Lottery: 218 three-digit lottery numbers (000 to 999), one drawn per day from September 1989 to April 1990. NIST uses this data set to test the accuracy of summary statistics calculations. Dataset d holds the 218 observations in column y. Compute the sample mean of y and the sample standard deviation of y (denominator n \u2212 1)."}