Task 2: Frequency table
For the data listed below construct a grouped frequency distribution, the first group is 1-5, then 6-10. Repeat the groups as far as you need to.
4 6 11 26 7 19 38 42 39 17 12 8 6 19 31 18 42 18 1 13 39 41 45 16 2 15 24 33 28 14 37 44 5 25 13
For the grouped frequency distribution that you drew up for the above, calculate the following:
i) the mean ii) the standard deviation iii) the interquartile range (draw up an ogive) iv) the semi-interquartile range
(L02)
Task 3: Blvarlate data
The figures below show the average weekly turnover (sales) and the average weekly profit achieved by 12 shops in a certain town.
Te 15 mp 24 18 21 19 32 30 19 17 29 16 21 De 17 ma nd 32 24 27 21 40 38 26 25 40 16 30
i) For the above data calculate the equation of regression line (of
3.1. Estimate the mean of data in a grouped frequency table 3.2. Estimate the standard deviation of data in a grouped frequency table
4.1. Analyse bivariate data in terms of the product moment correlation coefficient, the equation of the regression line.
