17	As part of the marketing group of a film company, we are asked to find out the age distribution of the audience of the latest film.
	From 500 responses, we find that 50 are younger than 6 years old, 86 are 6 to 9 years,
	165 are 10 to 14, 25 are 15 to 21, and 174 are older than 21.
	a)Make a frequency table of these categorical data.
			Age	Frequency
			< 6
			6 to 9
			10 to 14
			15 to 21
			older than 21
			total
	b) Make relative frequency table.
	c)Make bar chart using counts in the frequency table.
	d) Would the distribution of responses in a bar chart of relative frequencies be different from the distribution of responses in a bar chart of frequencies?
	e)Make pie chart.
18	Write few sentences describing the distribution across age groups shown by the charts.
19	The audiences interviewed were also asked if they had seen the movie before (Never, Once, More than Once):
			Age Group
			Under 6	6 to 9
	Viewing Frequency	Never	42	62
	Once	5	20
	More Than Once	3	4
	a)Compute the marginal frequency distribution by Viewing Frequency in new column labeled "Total".
	b)Compute the marginal frequency distribution by Age Group in new row labeled "Total".
	c) What percentage of all audience members are over 21?
	d) In the Viewing Frequency group "More Than Once", what percentage are Over 21?
20	a)Compute the relative frequency distribution for each Age Group in order to compare distributions by Age Group.
	The frequency distributions in #19 cannot be compared directly because the Age Group sizes are unequal.
	For each Age Group, divide count by column subtotal (not the grand total). If you do this correctly, the first column will have 84%, 10%, and 6%.
			Age Group
			Under 6	6 to 9
	Viewing Frequency	Never
	Once
	More Than Once
	b)Make stacked bar chart of the relative viewing frequencies by Age Group in 20 a):
	Select all the cells within the red-dashed rectangle above, Insert, Insert Column or Bar Chart, and 2D Column and Stacked.