The reading rate for 60 students is shown in the frequency table below.
Reading Rate
(words per minute) Frequency
60 6
65 8
70 12
75 5
80 1
85 1
90 2
95 5
100 20
Determine the standard deviation of the data set and explain what it means in terms of the data.
A.) The standard deviation is 13.69. The typical reading rate for the data set varies from the mean by an average of 13.69 words per minute.
B.) The standard deviation is 15.76. The typical reading rate for the data set varies from the mean by an average of 15.76 words per minute.
C.) The standard deviation is 13.69. The reading rate of a randomly selected student varies from the mean by 13.69 words per minute.
D.) The standard deviation is 15.76. The reading rate of a randomly selected student varies from the mean by 15.76 words per minute.