Question

Does the frequency distribution appear to have a normal distribution using a strict interpretation of the relevant​ criteria? Temperature ​(degrees​F) Frequency 50 dash 54 2 55 dash 59 0 60 dash 64 4 65 dash 69 12 Temperature ​(degrees​F) Frequency 70 dash 74 7 75 dash 79 5 80 dash 84 1 Does the frequency distribution appear to have a normal​ distribution?

Answer 1

Answer:

And as we can see on the plot we have the distribution left skewed so then this distribution is not normal because we don't have a bell shaped histofram and is not symmetric.

Explanation:

Assuming the following dataset

Temperature (F)       Frequency

50-54                          2

55-59                          0

60-64                          4

65-69                          12

70-74                           7

75-79                           5

80-84                           1

For this case we can construct the histogram with the following R code.

f<-c(2,0,4,12,7,5,1)

> barplot(f)

And the result is on the figure attached.

And as we can see on the plot we have the distribution left skewed so then this distribution is not normal because we don't have a bell shaped histofram and is not symmetric.