Variance and standard deviation for data
The number of shark attacks and death over a recent 5 year period is shown. Find the mean, median, mode, midrange, range, variance and standard deviation for the data. Which data set is more variable?
Attacks
68
50
42
36
75
Death
5
3
2
4
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A solution contains 4.08 g of chloroform (CHCl3) and 9.29g of acetone (CH3COCH3) . The vapor pressures at 35 degrees C of pure chloroform and pure acetone are 295 torr and 332 torr, respectively.
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A 5.6-µC point charge is located at x = 1.2 m, y = 3.2 m, and a -4.2-µC point charge is located at x = 1.9 m, y = -2.3 m. (a) Find the magnitude and direction of the electric field at x = -2.7 m, y = 1.1 m.
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Determine the power devolped in kW, The exergy destruction rate in kW, and evaluate the exergetic turbine efficiency. Let To=25 deg C, po=1 bar.
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