Some data from a lab class's free-fall measurements are shown below using Capstone's statistics visualization display.
Use the graph to calculate
The fraction of data points within 1 standard deviation:
The percent precision of this data set:
Homework Answers
Note that there are a total of 13 observations taken.
Mean of these observations = 9.9146 m/s²
And, standard deviation = 1.1313 m/s²
So, one standard deviation interval from mean would be:
I = (9.9146-1.1313, 9.9146+1.1313)
= (8.7833, 11.0459)
So, from graph we can see that there are 8 observations within this interval.
Thus, fraction of data points within one standard deviation = 8/13 = 0.6154.
---------------------------------------------------------------
And the percentage precision is -
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Some data from a lab class's free-fall measurements are shown
below using Capstone's statistics visualization display....
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