1. The histogram shows the cost of buying a certain toy in a number of different shops. (10)

(a) Draw a cumulative frequency graph and use it to answer the following questions.(i) How many shops

charged more than Rs. 2.65?

(ii) What is the median price?

(iii) How many shops charged less than Rs 2.30?

(iv) How many shops

charged between Rs 2.20 and Rs 2.60?

(v) How many shops charged between Rs 2.00 and Rs 2.50?

(b) If the standard deviation for the above data is 0.39 Comment on skewness of the data.(c) If the coefficient of variation of the data is 15% find out probable mean.

Q2: which Group is more consistent? (10)

Class Interval 0 - 10 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 Group A 10 15 45 5 70 80 50Group B 10 5 30 50 20 2 60

Prepared by:Muhammad Asad AliMBA (Finance), MA (Eco), (CA)

)Rs(Price

7

6

5

4

3

2

1

03.002.802.602.402.202.00

Frequency