Question

For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 30 to the data set?
here is the link picture plez help
http://static.k12.com/calms_media/media/1417500_1418000/1417693/1/1349366d505f54d9f968044c6fe97ec47facad33/FGA_130917_261016.jpg help me plez i really need help

Answer 1

@yannibby.

Answer 2

@.Sam.

Answer 3

, i guess just do mean & median on the data set . but im not really sure ...

Answer 4

A.
The mean is increased by about 0.4 and the median is increased by 3.

B.
The mean is increased by about 0.4 and the median is increased by 4.

C.
The mean is increased by about 0.6 and the median is increased by 3.

D.
The mean is increased by about 0.6 and the median is increased by 4.

Answer 5

giving medals out :) plez help

Answer 6

can you help her figure this out please ?. @texaschic101

Answer 7

@dumbcow @.Sam. @lala526 @ParthKohli
can you help me ?? i will fan you all and medal you all if you help

Answer 8

6,8,12,15,18,20,20,20,26,28,29,30,31,32,32,34 (this is without the added 30)
median is : (20 + 26)/2 = 46/2 = 23
mean = 361/16 = 22.56

6,8,12,15,18,20,20,20,26,28,29,30,30,31,32,32,34 (with the added 30)
median is : 26
mean = (361 + 30)/17 = 391/17 = 23

mean : 23 - 22.56 = .44
median : 26 - 23 = 3

mean increased by .4 and median increased by 3 (answer A)

Answer 9

thanks so much @texaschic101