The problems here are from the exercises in Chapters 14 and 18 of AI: A Modern Approach.
You should feel free to make appropriate assumptions. However you should state explicitly any assumptions that you make.
Please do the following exercises:
------------------------------------------------------------
Under Range In Range Over Range Sum
0 13 0 1029.000
------------------------------------------------------------
Mean Median Midpoint Geometric Harmonic
79.154 80.000 78.000 77.971 76.757
------------------------------------------------------------
SD Quart Dev Range SE mean
14.011 9.875 44.000 3.886
------------------------------------------------------------
Minimum Quartile 1 Quartile 2 Quartile 3 Maximum
56.000 68.750 80.000 88.500 100.000
------------------------------------------------------------
Skew Kurtosis
-0.075 1.736
------------------------------------------------------------
Null Mean t prob (t) F prob (F)
0.000 20.369 0.000 414.906 0.000
------------------------------------------------------------
Histogram:
Midpt Freq
60.000 2 **
68.000 2 **
76.000 3 ***
84.000 3 ***
92.000 1 *
100.000 2 **