7. The chart shows the temperature, in degrees Celsius, of coffee in 20 recently tested coffee makers. 76 68 72 73 70 69 68 73 81 72 66 85 72 72 69 72 67 74 73 69 a. Calculate the measures of central tendency b. The sample standard deviation c. Create a box and whisker plot for the data [1] d. Comment on the results of the data based on your calculations above. [2] [3] [3]