The following twenty-five data points were generated at random by the computer program RANDOM NORMAL INTEGERS on the accompanying disk.

82 84 83 82 83 81 85 84 80 85 85 85 87

83 82 83 84 83 80 81 83 85 84 80 79

Find the

a) Mean of the data

b) Standard Deviation of the data

2. Artie Fact wants to determine the total value of all of the houses in his city. So he goes to the taxAssessr's Office and looks up the value of 30 houses in the city. He finds that the averages of these houses is about $87,300 houses , with a standard deviation of $5,400. From the tax roll

Question

The following twenty-five data points were generated at random by the computer program RANDOM NORMAL INTEGERS on the accompanying disk. 

82 84 83 82 83 81 85 84 80 85 85 85 87 

83 82 83 84 83 80 81 83 85 84 80 79 

Find the  

a) Mean of the data


b) Standard Deviation of the data 

  

2. Artie Fact wants to determine the total value of all of the houses  in his city. So he goes to the taxAssessr's Office and looks up the value of 30 houses in the city. He finds that the averages of these houses is about $87,300 houses , with a standard deviation of $5,400. From the tax roll