You really don't expect somebody just to do all that arithmetic for you, do you?
Here is the method:
1. Find the mean. (add them all up, then divide by the number of data values)
2. take the difference between each data value and the mean, then square each of that result
3. Add up all those squares, then divide by the number of data values you have
4. Finally, take the square root of the sum form #3, you are done!
Most scientific calculators have a "statistic" mode and can do all those steps for you.
You have to simply enter the data values one at a time.
Your manual of your calculator will tell you what steps and what keys are involved.
Most common brands of calculator, such at TI, Sharp, etc, have manuals online to download.
what is the standard deviation of the following...
2.82
3.49
3.28
3.25
3.26
2.87
3.16
3.4
2.84
3.72
3.22
3.44
3.65
3.02
3.03
3.8
3.23
3.26
3.53
3.75
3.15
3.66
3.36
3.79
2.85
3.74
3.23
3.52
3.32
2.89
2.83
2.93
3.71
3.47
3.52
2.83
3.64
2.96
3.59
3.33
3.38
3.44
3.31
3.03
3.26
3.04
2.98
2.8
3.75
3.64
3.65
3.18
3.44
3.06
3.51
3.33
2.81
3.64
3.05
2.85
3.56
2.92
3.35
3.46
3.59
3.11
3.65
3.17
2.97
3.77
3.21
3.17
3.65
2.94
3.53
3.65
3.61
3.7
2.91
3.09
3.77
3.79
3.59
3.38
3.57
2.97
3.44
3.64
3.48
2.99
3.73
2.91
3.78
3.4
3.13
3.14
3.24
3.56
3.16
3.53
3.01
3.3
3.62
3.21
3.39
3.65
3.47
3.44
3.88
3.83
3.53
3.22
3.56
3.2
3.17
3.41
3.56
3.34
3.44
3.76
3.55
3.88
3.31
3.09
3.82
3.01
3.66
3.64
3.59
3.49
3.13
3.83
3.04
3.91
3.56
3.96
3.46
3.22
3.27
3.43
3.85
3.89
3.37
3.32
3.54
3.8
3.74
3.17
3.27
3.32
3.56
3.95
3.56
3.79
3.93
3.79
3.71
3.05
3.22
3.85
3.82
3.23
3.56
3.53
3.62
3.8
3.47
3.64
3.03
3.17
3.22
3.92
3.82
3.26
3.8
3.2
3.46
3.67
3.06
3.66
3.96
3.75
3.83
3.22
3.36
3.21
3.02
3.99
3.07
3.65
3.67
3.06
3.98
3.93
3.41
3.43
3.7
3.76
3.9
3.23
1 answer