When you are dealing with relative frequencies, you are wondering about comparing percentages of a total. In this question you have 20 total weeks. You want to know how many times you sold a certain number of kitchen appliances how often compared to the total number of weeks.

The company sold 6-10 rice cookers in only 1 of the weeks. You take that number and divide by the total number of weeks. 1/20=0.05 or 5%

It sold 11-15 rice cookers 10 out of 20 total weeks. 10/20=.50 or 50%

It sold 16-20 cookers 9 out of 20 total weeks. 9/20=0.45 or 45%

Now that you know all the relative frequencies all you need to do is graph it. Use the x axis (bottom horizontal) for number of items sold. You should have three sections. The first label 6-10, second is 11-15, and last is 16-20.

On the y axis (vertical, up down) you should label it as percentages. Label each increment of percentages as you go up. I divided my graph by 10% each time.

Finally, plot each of your values like a bar graph. The 6-10 column should be shaded up to the 5% mark, the 11-15 column should be shaded to 50%, and the 16-20 column should be shaded up to 45%

Also, make sure to give a label at the top which every graph should have!

Here's my crude drawing of what it should look like in general. You of course should make it look a little cleaner.

Let me know if you need anything else or any more clarification. Thank you!

Sep 8th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.