Answer to Question #262416 in Statistics and Probability for matt

Question

(1)The data in Table 1 shows the age of 40 randomly selected university learners.

                                                                                                                      

Table 1: Age of university Learners

24       39       33       30       33       34       25       27

36       32       44       49       29       35       34       31

38       43       35       31       36       38       39       44

36       29       28       35       39       37       42       48

40       26       45       41       41       28       24       39

           

Given that the lower limit of the first class interval is 23 and the class width is 4.

i.           Prepare a frequency and relative frequencydistribution of the data.

ii.          Represent the data by using a histogram.

iii.  Construct a cumulative frequency polygon of  the type “  <    ”  . 
iv.    Use your graph in a)iii to estimate first quartile,  median and third quartile.

b)        The data in Table 2 represents the prices of Seabass (RM/kg) sold at two different wet markets for 9 consecutive days.

Table 2: Price of Seabass (RM/kg)

Wet Market A

23 23 24 23 24 23 22 22 23

Wet Market B

20 20 21 22 22 23 21 21 23

 

 For each type of market,

i.      calculate the mean and standard deviation.

ii.     compare their data spread using the coefficient of variation.