DAT/565: Data Analysis And Business Analytics Wk 4 – Practice: Wk 4 Exercises Calculation Of Total Std. Dev (One Value Only To Be Calculated)
DAT/565: Data Analysis And Business Analytics Wk 4 – Practice: Wk 4 Exercises Calculation Of Total Std. Dev (One Value Only To Be Calculated)
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?
Crash Damage ($) Goliath Varmint Weasel 1,590 1,240 1,070 760 1,430 2,180 890 1,360 1,850 1,980 1,860 1,200 1,220 910 1,950
Total Std. Dev ? (only) Nothing more to calculate. Need to have the correct calculated value.
These values are wrong: Total Std. Dev
Total Std. Dev=Pooled StDev=sqrt(MSE)=sqrt(202790)=450.322
Total Std. Dev=Pooled StDev=450.3226
Leave a Reply
Want to join the discussion?Feel free to contribute!