Question

A grocery store has three locations: Central, North, and South. The grocery store counted the number of cantaloupes sold at each of the three locations each day for a month. The table shows the mean and the mean absolute deviation of the number of cantaloupes sold each day.

Which statements are correct?
Choose exactly two answers that are correct.
Store location Mean number of sales MAD
Central 45 4.1
North 47 5.7
South 29 5.9
a. The number of cantaloupes sold at Central varied less than did the number sold at North.
b. The number of cantaloupes sold at Central varied more than did the number sold at South.
c. The number of cantaloupes sold at Central and South varied about the same amount.
d. The number of cantaloupes sold at North and South varied about the same amount.
What is the MAD of the data set?
{10, 9, 16, 5, 10}
Dr. Oguz counted the number of cubs in 10 tiger cub litters and then arranged the numbers from smallest to largest. The numbers of cubs in each litter were 1, 1, 2, 2, 3, 3, 3, 4, 5, and 6. The mean of these measurements is 3.
What is the mean absolute deviation?
a. 1.2
b. 1.5
c. 2
d. 12
Tamar surveyed six friends, asking each how many times he or she had ridden in a helicopter. The numbers of times she recorded were 0, 0, 0, 1, 3, and 8.
What is the mean absolute deviation of the number of times? Round to the nearest tenth, if needed.
a. 0 times
b. 2 times
c. 2.3 times
d. 2.5 times
Four friends played cards. Their final scores were –6, –3, 0, and 1.
What is the mean absolute deviation of their scores?

Answer 1

(i only have the answer to your first question)

the correct answers are:The number of cantaloupes sold at North and South varied about the same amount. and The number of cantaloupes sold at Central varied less than did the number sold at North. i took the test, the person that answered this is not correct, he's answer wasn't even two. i hope this helps.

Answer 2

a. The number of cantaloupes sold at Central varied less than did the number sold at North.

What is the MAD of the data set?
{10, 9, 16, 5, 10}

mean = (10 + 9 + 16 + 5 + 10)/5 = 10

MAD = ( (10 - 10) + (10 - 9) + (16 - 10) + (10 - 5) + (10 - 10) )/5 = 12/5

The numbers of cubs in each litter were 1, 1, 2, 2, 3, 3, 3, 4, 5, and 6. The mean of these measurements is 3.
What is the mean absolute deviation?

mad = ( (3 - 1) + (3 - 1) + (3 - 2) + (3 - 2) + (4 - 3) + (5 - 3) + (6 - 3) )/10

a. 1.2

Tamar surveyed six friends, asking each how many times he or she had ridden in a helicopter. The numbers of times she recorded were 0, 0, 0, 1, 3, and 8.
What is the mean absolute deviation of the number of times? Round to the nearest tenth, if needed.

mean = (1+3+8)/6 = 2
mad = ( 2 + 2 + 2 + (2 - 1) + (3 - 2) + (8 - 2) )/6 = 14/6
c. 2.3 times

Four friends played cards. Their final scores were –6, –3, 0, and 1.
What is the mean absolute deviation of their scores?

mean = (-6 - 3 - 1)/4= -10/4 = -2.5

mad = ( (6 - 2.5) + (3 - 2-5) + 2.5 + (2.5 + 1) )/2.5
mad = 4