The weather forecast for New York for the period from 1 May 2017 to 15 May 2017 represents the following set of maximal temperatures in °F: 75, 71, 61, 60, 64, 61, 62, 59, 62, 65, 65, 68, 68, 72, 74. (a) Calculate the sample mean, sample variance, and standard deviation. Round your answers to two decimal places (e.g. 98.76). = 52 S = LINK TO TEXT (b) Find the median and quartiles for the data. Enter exact values. Median 91 = 93 = =