STATISTICS AND PROBABILITY 2 The table shows the distances walked (in kilometers) by members of a
walking group in one week
Cumulative frequency
Distance, d (k/m)
0<d<3
3<d<6
6<d< 9
9<d<12
12 <d<15

Frequency
4
14
6
8
4

Cumulative frequency

a Copy and complete the table
b Construct a cumulative frequency curve to represent this data
c Find estimates for the median and quartiles,
d Find estimates for the range and interquartile range

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

step-by-step explanation: