Frequency Distribution

2.In a marketing study, 100 consumers were asked to select the best digital music player from the iPod, the iRiver, and the Magic Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?

4. Two thousand frequent Midwestern business travelers are asked which Midwest city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. The results were 100 liked Indianapolis best, 450 liked Saint Louis, 1,300 liked Chicago, and the remainder preferred Milwaukee . Develop a frequency table and a relative frequency table to summarize this information.

5. Wellstone, Inc., produces and markets replacement covers for cell phones in a variety of colors. The company would like to allocate its production plans to five different colors: bright white, metallic black, magnetic lime tangerine orange, and fusion red. The company set up a kiosk in the Mall of America for several hours and ask randomly selected people which cover color was their favorite: Bright white 130
Metallic black 104
Tangerine orange 455
Fusion red 286
A. What is the table called?

B. Draw a bar chart in the table.

C. Draw a pie chart.

D. If Wellstone, Inc., plan to produce million cell phone covers, how many of each color should it produce?

11. Wachesaw Manufacturing, Inc., produced the following number of units in the last 16 days.

27, 27, 27, 28, 27, 25, 25, 28
26, 28, 26, 28, 31, 30, 26, 26

the information is to be organized into a frequency distribution.

A. How many classes would you recommend?

b. What class interval would you suggest?
C .what lower limit would you recommend for the first class?

d. organize the information into a frequency distribution and determine the relative frequency distribution.

e. comment on the shape of the distribution.

15. Molly’s Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Molly’s customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days.

a.What is this chart called?

b.What is the total number of frequencies?

c.What is the class interval?

d.What is the class frequency for the 10 up to 15 class?

e.What is the relative frequency of the 10 up to 15 class?

f.What is the midpoint of the 10 up to 15 class?

g.On how many days were there 25 or more packages shipped?

19.the following cumulative frequency polygon shows the hourly wages of a sample of certified welders in the Atlanta ,Georgia ,area.