Question

Data were collected from a website about the most​ "liked" fast food brands. The data values​ (the number of​ "likes" for each fast food​ brand) for the brands named ranged from 1.0 million to

15.1 million.

a.If these values are grouped into six class​ intervals, indicate the class boundaries.

b. What class width was​ chosen?

c. What are the six class​ midpoints?

Answer 1

Here data values the number of likes for each fast food brand ranged from 1.0 million to 15.1 million.

(a) Here there are six class intervals, so range = 15.1 - 1.0 = 14.1 million

here tentative class width = 14.1/6 = 2.35 million

so a class width of 2.35 million can be chosen.

Class intervals

1. 1.0 million to 3.35 million

2. 3.35 million to 5.70 million

3. 5.70 million to 8.05 million

4. 8.05 million to 10.40 million

5. 10.40 million to 12.75 million

6. 12.65 million to 15.1 million

(c) Here midpoints are

1. 2.175 million

2. 4.525 million

3. 6.875 million

4. 9.225 million

5. 11.575 million

6. 13.925 million