Question

The data epresanm te time in miutes spent eading a peolisical blog in a day Construct a teouency dunbuion using ea danses in the tatie i midpoints, relative trequancies and cumdatve tequencdles Which class tas te g tequency and which has the least equency? nclude the Compiete the table starting with the lowest class l Senplty you answers Cumulative 6 e g

Answer 1

Solution:-

From the given data we can find Max and Min value i.e. Min = 0 and Max = 19. Now our task in to divide the data in 5 classes. Now we will select the class width as follows :-

$\\ \ class \ width = \frac{Max\ value - Min\ value}{Number\ of\ classes} = \frac{19 - 0}{5} = 3.8 \approx 4$

So by taking the derived class width we will make the class intervals. Solution table is as it is:-

Class (lower - upper limit)		Frequency	Midpoint	Relative Frequency	Cumulative Frequency
0	3	3	1.5	0.15	3
4	7	4	5.5	0.2	7
8	11	2	9.5	0.1	9
12	15	7	13.5	0.35	16
16	19	4	17.5	0.2	20