Question

Pls answer with working out!!

THANKS

Answer 1

#3.

0 × 5 = 0

1 × 9 = 9

2 × 7 = 14

3 × 4 = 12

4 × 3 = 12

5 × 2 = 10

-------------------add

0 + 9 + 14 + 12+12+10 = 57

57/ 30 (people) = 1.9 ………

so mean (average) = 1.9

#4

0x0=0

1x8=8

2x12=24

3x6=18

4x4=16

5x2=10

--------------add

0+8+24+18+16+10=76

76 /32 (people) = 2.375

or

= 2.38

so Mean (average) = 2.375 or 2.38

#5

Midpoint Midpoint times frequency

0 < A ≤ 10 =5 5 x 38 = 190

10 < A ≤ 25 = 17.5 17.5 x 36 = 630

25 < A ≤ 40 = 32.5 32.5 x 30 = 975

40 < A ≤ 60 = 50 50 x 46 = 2300

------------------------------add

= 4095

Frequency = 38+36+30+46 = 150

4095 / 150 = 27.3

So mean = 27.3