Several groceries reported differing prices for a bread. The prices are as follows: 2.3, 2.6, 3.2, 2.8, 3.1, 3, 2.2, 2, 2.8. Find the mean, median, and mode of the prices for a bread. Then find the range of the prices.
A) mean: $3.67, median: $3.8, mode: $1.8, range: $2.2
B) mean: $2.67, median: $2.8, mode: $2.8, range: $1.2
C) mean: $1.67, median: $4.8, mode: $3.8, range: $3.2
D) mean: $4.67, median: $1.8, mode: $4.8, range: $0.5
E) mean: $0.67, median: $5.8, mode: $0.8, range: $4.2

Question

Quizplus · Accepted Answer

To find the mean, we add all the prices and divide by the total number of prices:
(2.3 + 2.6 + 3.2 + 2.8 + 3.1 + 3 + 2.2 + 2 + 2.8) / 9 = 24 / 9 = $2.67
To find the median, we need to arrange the prices in numerical order:
2, 2.2, 2.3, 2.6, 2.8, 2.8, 3, 3.1, 3.2
The median is the middle number, which is 2.8.
To find the mode, we look for the number that appears most frequently. In this case, 2.8 appears twice, while no other number appears more than once. So the mode is also 2.8.
To find the range, we subtract the lowest price from the highest price:
3.2 - 2 = $1.2
Therefore, the best choice is B, which matches all of the calculations we just did.

Several Groceries Reported Differing Prices for a Bread