Lesson 1.6 Checkpoint

The roster of the Dallas Cowboys professional football team in a recent season included 7 defensive linemen. Their weights (in pounds) were 321, 285, 300, 285, 286, 293, and 298. Calculate the mean weight of the 7 defensive linemen. (LT 1.6.2 #1)

• x̄ = 295.43 pounds

• x̄ = 295 pounds

• x̄ = 285 pounds

• There is no mean.

Tags

CCSS.6.SP.B.5C

The roster of the Dallas Cowboys professional football team in a recent season included 7 defensive linemen. Their weights (in pounds) were 321, 285, 300, 285, 286, 293, and 298. The defensive lineman that weighed 321 pounds may be an outlier. How did this player affect the mean? Justify your answer with an appropriate calculation. (LT 1.6.2 #2)

• The player who weighed 321 pounds brought the mean up. Without this player, the mean decreases from 295.43 to 291.17 pounds.

• The player who weighed 321 pounds brought the mean up. Without this player, the mean increases from 291.17 to 295.43 pounds.

• The player who weighed 321 pounds brought the mean down. Without this player, the mean decreases from 295.43 to 291.17 pounds.

• The player who weighed 321 pounds brought the mean down. Without this player, the mean increases from 291.17 to 295.43 pounds.

Ryan and Brent were curious about the amount of french fries they would get in a large order from their favorite fast-food restaurant, Burger King. They went to several different Burger King restaurants over a series of days and ordered a total of 14 large fries. The weight of each order (in grams) is shown here.

165 163 160 159 166 152 166 168 173 171 168 167 170 170

Calculate the mean weight for the 14 orders of large fries. (LT 1.6.2 #3)

• x̄ = 165.57 grams

• x̄ = 166 grams

• x̄ = 168 grams

• There is no mean.

Tags

CCSS.6.SP.B.5C

Ryan and Brent were curious about the amount of french fries they would get in a large order from their favorite fast-food restaurant, Burger King. They went to several different Burger King restaurants over a series of days and ordered a total of 14 large fries. The weight of each order (in grams) is shown here.

165 163 160 159 166 152 166 168 173 171 168 167 170 170

Ryan and Brent noticed a shortage of fries in the order that weighed 152 grams. How did this order affect the mean? Justify your answer with an appropriate calculation. (LT 1.6.2 #4)

• The order that weighed 152 grams brought the mean down; without this order, the mean increases from 165.57 to 166.62 grams.

• The order that weighed 152 grams brought the mean down; without this order, the mean decreases from 166.62 to 165.57 grams.

• The order that weighed 152 grams brought the mean up; without this order, the mean increases from 165.57 to 166.62 grams.

• The order that weighed 152 grams brought the mean up; without this order, the mean decreases from 166.62 to 165.57 grams.

The following data set represents the minimum wage for 1990-2000. Calculate the median. (As this is money, round to two decimal places.) 8.25, 9.80, 7.25, 7.25, 8.44, 8.75, 8.44, 9.50, 9.60, 9.50

(LT 1.6.1 #1)

• $9.50

• $7.80

• $7.25

• $8.60

Tags

CCSS.6.SP.B.5C

The following data set represents the minimum wage for 1990-2000. Interpret the median. (As this is money, round to two decimal places.) 8.25, 9.80, 7.25, 7.25, 8.44, 8.75, 8.44, 9.50, 9.60, 9.50

(LT 1.6.1 #2)

• About half of the minimum wages are higher than $9.50, and about half are lower.

• About half of the minimum wages are higher than $7.80, and about half are lower.

• About half of the minimum wages are higher than $7.25, and about half are lower.

• About half of the minimum wages are higher than $8.60, and about half are lower.

Tags

CCSS.6.SP.B.5C

Find the Median of the data set.

Unit 1 Student Test Scores

75, 77, 68, 84, 92, 85, 99, 72, 63, 89, 80, 77

(LT 1.6.1 #3)

• 77

• 99

• 80

• 78.5

Tags

CCSS.6.SP.B.5C

Interpret the Median of the data set.

Unit 1 Student Test Scores

75, 77, 68, 84, 92, 85, 99, 72, 63, 89, 80, 77

(LT 1.6.1 #4)

• About half of the student test scores for Unit 1 are above 77, while the other half are less than 77.

• About half of the student test scores for Unit 1 are above 99, while the other half are less than 99.

• About half of the student test scores for Unit 1 are above 80, while the other half are less than 80.

• About half of the student test scores for Unit 1 are above 78.5, while the other half are less than 78.5.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Which measure of center is more appropriate, the mean or the median? (LT 1.6.3 #1)

• Mean

• median

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Which measure of center is more appropriate, the mean or the median? Why? (LT 1.6.3 #2)

• Mean because this is a skewed data set.

• Median because this is a skewed data set

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2