Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth.
20, 16, 18, 9, 20, 16,14

Question

Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth.
 20, 16, 18, 9, 20, 16,14

anonymous · Answer

A. 
mean = 16.1; 

standard deviation = 3.6
  
 
B. 
mean = 15.9; 

standard deviation = 3.6          
  
 
C. 
mean = 16.1;
 standard deviation = 12.7
  
 
D. 
mean = 16; 

standard deviation = 12.7

kkutie7 · Answer

$$mean=\frac{sum}{number of data}$$
so you would add all the number together and divide them by seven

kkutie7 · Answer

to find the standard dev you first find the mean. then take each number and subtract it from the mean. square each value you get from that. find the mean of this new set of numbers. Finally take the square root of the mean