Question

I need answers plz
I don't get it !!

Answer 1

i did the first 5 for you with explanation. try doing the rest so you'll understand better :)

1) mean:

`(5 + 3 + 2 + 6 + 5 + 2 + 5)/(7) = (28)/(7) = 4`

median:

*arrange the numbers in ascending order and choose the number at the centre

2, 2, 3, 5, 5, 5, 6

= 5

mode:

*the number that occurs most often

= 5

range:

*highest value - lowest value

= 6-2

=4

2) mean:

`(10 + 10 + 12 + 12 + 15 + 22 + 24)/(7) = (105)/(7) = 15`

median

10, 10, 12, 12, 15, 22, 24

=12

mode = 10 and 12

range = 24-10

= 14

3) mean:

`(14 + 9 + 20 + 5 + 17 + 13)/(6) = (78)/(6) = 13`

median:

5, 9, 13, 14, 17, 20

*since there are 2 numbers at the centre, you need to add both numbers and divide it by 2 to get the median

`(13 + 14)/(2) = 13.5`

mode:

no mode as all number occurs once only

range = 20-5

= 15

4) mean:

`(21 + 15 + 16 + 25 + 13 + 18)/(6) = (108)/(6) = 18`

median:

13, 15, 16, 18, 21, 25

`(16 + 18)/(2) = 17`

mode:

no mode

range = 25-13

= 12

5) mean:

`(20 + 17 + 10 + 31 + 25 + 18 + 12)/(7) = (133)/(7) = 19`

median:

10, 12, 17, 18, 20, 25, 31

= 18

mode:

= no mode

range = 31-10

= 21