Date t(s)
1 .59
2 .60
3 .59
4 .56
5 .86
6 .60
7 .94
8 .88
9 .50
10 .50
11 .85
12 .60
13 1.01
14 .98
15 .66
16 .87
17 .47
18 .50
19 .58
20 .52

A) find the sd (standard deviation)

I found sd= .182 s

B) find average +- sd
avg + sd = .865 s
avg- sd= .501s

Question

Date            t(s)
1                 .59     
2                 .60
3                 .59
4                 .56
5                 .86
6                 .60
7                 .94
8                 .88
9                 .50
10               .50
11               .85
12               .60
13               1.01
14               .98
15               .66
16               .87
17               .47
18               .50
19               .58
20               .52

A) find the sd (standard deviation)

I found sd= .182 s

B) find average +- sd
avg + sd = .865 s
avg- sd= .501s

anonymous · Answer

avg= .683

C) determine the number of your data points lie within +- sd of the average you reported in B) write the number of data points in the space below and calculate the the percentage  
of data points lying within a standard deviation of the average?