كويز تفاعلي: اختبار الرياضيات ريفيل الصف الثامن الوحدة الحادية عشرة

A

Positive Association.

B

Negative Association.

C

No Association.

D

Non-linear Association.

A

As the months progress, the heights of the students increase. There is a positive, linear association. There are no clusters or outliers.

B

The height of a student does not depend on their birth month. The scatter plot shows no association.

C

As the months progress, the heights of the students decrease. There is a negative, linear association. There are no clusters or outliers.

D

As the months progress, the heights of the students are the same. There is a positive, linear association.

A

There is no predictable pattern between x and y.

B

As x increases, y decreases.

C

The data points form a perfect circle.

D

As x increases, y also increases.

A

15 Cups.

B

25 Cups.

C

35 Cups.

D

45 Cups.

A

Size 7.

B

Size 7.5.

C

Size 8.

D

Size 9.

A

There is a strong association between the variables.

B

The slope of the line must be zero.

C

The association is weak.

D

The predictions made using the line will be less accurate.

A

y = 3x - 4.

B

y = 3x + 4.

C

y = 7x.

D

y = 4x + 3.

A

The value of y decreases as x increases.

B

There is no relationship between x and y.

C

The value of y increases as x increases.

D

The relationship is perfectly linear with zero error.

A

16

B

11.5

C

46

D

1

A

y = 4x + 2.8.

B

y = 0.04x + 2.8.

C

y = 2.8x + 0.04.

D

y = 0.04x + 3.0.

A

7th graders; because their relative frequency of buying lunch is 0.40.

B

8th graders; because their relative frequency of buying lunch is 0.67.

C

7th graders; because 45 students pack their lunch.

D

8th graders; because 51 is greater than 30.

A

0.04

B

4.0

C

0.40

D

0.60

A

Male students; because their conditional relative frequency of not riding the bus is 0.44.

B

Female students; because their conditional relative frequency of not riding the bus is 0.33.

C

Male students; because 85 is a larger number than 42.

D

Female students; because their conditional relative frequency of riding the bus is 0.67.

A

Whole numbers only.

B

Decimals (rounded to the nearest hundredth) or percentages.

C

Negative integers.

D

Square roots of the grand total.

A

A student that is chosen at random that uses social media is more likely to be a middle school student than a high school student.

B

A student that is chosen at random that does not use social media is more likely to be a middle school student than a high school student.

C

A middle school student that is chosen at random is less likely to use social media.

D

A high school student that is chosen at random is more likely to use social media.