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anonymous
 one year ago
When the outliers are removed, how does the mean change?
dot plot with 1 on 18, 2 on 38, 1 on 40, 3 on 44, 1 on 46, 1 on 48
The mean decreases by 2.75.
The mean increases by 2.75.
The mean increases by 3.25.
There are no outliers.
anonymous
 one year ago
When the outliers are removed, how does the mean change? dot plot with 1 on 18, 2 on 38, 1 on 40, 3 on 44, 1 on 46, 1 on 48 The mean decreases by 2.75. The mean increases by 2.75. The mean increases by 3.25. There are no outliers.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know the mean increases

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.1I'll check this

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.1Pretty sure by 3.25; I'll have a friend check @jim_thompson5910

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats what i thought

phi
 one year ago
Best ResponseYou've already chosen the best response.3First , figure out 1 on 18, 2 on 38, 1 on 40, 3 on 44, 1 on 46, 1 on 48 18+2*38+40+3*44+46+48 and then divide by 1+2+1+3+1+1 that is the original mean then figure out 2*38+40+3*44+46+48 and divide by 2+1+3+1+1 that is the new mean

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0witch simplifys to 3.25

phi
 one year ago
Best ResponseYou've already chosen the best response.3What did you get for 18+2*38+40+3*44+46+48 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.3and what do you get for 1+2+1+3+1+1 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.3the average is the sum of all the numbers (i.e. 360) divided by the number of numbers (i.e. 9) so the first mean is 360/9 = what ?

phi
 one year ago
Best ResponseYou've already chosen the best response.3now we "toss out the outlier" which is the number that seems "far away" from the others. in this case, the 18 seems far away so now we add up all the numbers 360 take away 18 we get 36018 = 342 and instead of 9 numbers, we now have 8 numbers. the new mean is 342/8 = what ?

phi
 one year ago
Best ResponseYou've already chosen the best response.3so old mean was 40, new mean is 42.75 the new mean is bigger by how much ?
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