Question

http://prntscr.com/6kbst5

Answer 1

@iGreen

Answer 2

@mathslover

Answer 3

@sammixboo @mathslover

Answer 4

@sammixboo

Answer 5

@mathslover

Answer 6

CAN YOU HELP Moi?

Answer 7

Well, I tried to do it with calculator.

Found mean for the original data given:

terms being 6,8, 12,15,18,20,20,20,26,28,29,30,31,32,32,34

Adding these all, I get : 361

Now divide this with total terms : 16

So, mean = 361/16 = 22.5625 = 22.6 (approx.)

Now, if we add 30 to the data :

we have : Total sum = 361 + 30 = 391

No. of terms = 17

mean = 391/ 17 = 23

Answer 8

So, mean has increased by 0.4

Answer 9

okay

Answer 10

that makesa it a or b

Answer 11

I am going to guess b?

Answer 12

@mathslover

Answer 13

Hmm! one minute

Answer 14

k

Answer 15

Earlier the median was 1/2 (8th + 9th terms) = 1/2 (20 + 26) = 23

Later the median is 9th term ... which is 26

So, it is increased by 3.

Answer 16

thats a

Answer 17

Yeah! But I hope you understood the method?

Answer 18

yes i understnad

Answer 19

Okay, great! Good Luck.