Name of state 
Data value 

State 1 
Alabama 
2.2 
State 2 
Arkansas 
0.7 
State 3 
Connecticut 
0.9 
State 4 
Florida 
6.6 
State 5 
Idaho 
0.6 
State 6 
Iowa 
1.2 
State 7 
Louisiana 
2.9 
State 8 
Massachusetts 
1.9 
State 9 
Mississippi 
1.3 
State 10 
Nebraska 
0.5 
State 11 
New Jersey 
2.2 
State 12 
North Carolina 
4.6 
State 13 
Oklahoma 
1.4 
State 14 
Rhode Island 
0.4 
State 15 
Tennessee 
3.4 
Analysis:
Compute the mean and standard deviation of the sample data:
Mean =
Standard deviation =
Sample size =
Sample Size = 15
Sample Mean () isgiven by:
x  x   (x  )^{2} 
2.2  0.1467  0.0215 
0.7  1.3533  1.8315 
0.9  1.1533  1.3302 
6.6  4.5467  20.6722 
0.6  1.4533  2.1122 
1.2  0.8533  0.7282 
2.9  0.8467  0.7168 
1.9  0.1533  0.0235 
1.3  0.7533  0.5675 
0.5  1.5533  2.4128 
2.2  0.1467  0.0215 
4.6  2.5467  0.4855 
1.4  0.6533  0.4268 
0.4  1.6533  2.7335 
3.4  1.3467  1.8135 
Total =  41.8973 
Sample Standard Deviation (s) is given by:
Answers are:
Mean = 2.0533
Standard Deviation = 1.7299
Sample Size = 15
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