Question

The ages​ (in years) of a random sample of shoppers at a gaming store are shown....

The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​ range, mean,​ variance, and standard deviation of the sample data set.

1212​,

2121​,

2323​,

1313​,

1515​,

1717​,

2222​,

1616​,

1414​,

1515

  

The range is

1111.

​(Simplify your​ answer.)

The mean is

16.816.8.

​(Simplify your answer. Round to the nearest tenth as​ needed.)

The variance is

nothing.

​(Simplify your answer. Round to the nearest hundredth as​ needed.)

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

solution:-
range = 11
explanation:-
The range is the difference between the highest and lowest values in the data set
the lowest value is 12
the highest value is 23
the range = 23 - 12 = 11

mean = 16.8
explanation:-
sum of terms / number of terms = (12+21+23+13+15+17+22+16+14+15)/10
= 16.8

variance = 15.07


explanation:-
standard deviation = 3.9
explanation:-


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