Quiz about Algebra Nation - Section 10

Question 1

Two categorical variables can be represented with a

Accepted Answer

two-way frequency table.

Answer

contingency table

Answer

marginal frequency

Question 2

The total frequency for any row or column is called a

Accepted Answer

marginal frequency

Answer

two-way frequency table.

Answer

contingency table

Question 3

How many sophomores like burritos and pizza?

Accepted Answer

11

Answer

6

Answer

5

Answer

50

Question 4

How many total people were surveyed about what ice cream flavor they would pick?

Accepted Answer

269

Answer

107

Answer

92

Answer

70

Question 5

How many males were surveyed?

Accepted Answer

77

Answer

15

Answer

150

Answer

52

Question 6

How many females prefer a SUV?

Accepted Answer

135

Answer

21

Answer

156

Answer

180

Question 7

Mrs. Inman surveyed 100 RHS faculty members about their music preference. Complete the table to determine how many women were surveyed.

Accepted Answer

48

Answer

52

Answer

58

Answer

100

Question 8

The cell labeled with 84 is an example of a:

Accepted Answer

Marginal Frequency

Answer

Joint Frequency

Answer

Relative Frequency

Answer

Conditional Relative Frequency

Question 9

Which of the values below is a joint frequency?

Accepted Answer

4

Answer

400

Answer

200

Answer

182

Question 10

Describe the data that is represented by the 39.

Accepted Answer

Males who prefer Sports Cars

Answer

Male

Answer

Sports Car

Answer

Male Sports Cars

Question 11

What is the relative frequency of people that purchased no food?

Accepted Answer

15%

Answer

10%

Answer

60%

Answer

30%

Question 12

The table shows the different types of engineers and the subject they liked most.  What percentage of people surveyed were chemical engineers who preferred math?

Accepted Answer

15.5%

Answer

16.5%

Answer

33.1%

Answer

17.6%

Question 13

What is the relative frequency for selecting a teen given that the person likes chocolate?

Accepted Answer

12/107

Answer

45/107

Answer

73/107

Answer

12/269

Question 14

What is the relative frequency of choosing a person that likes vanilla that is a child?

Accepted Answer

22/92

Answer

77/269

Answer

22/269

Answer

77/107

Question 15

What is the relative frequency for selecting a person that likes chocolate that is a teen?

Accepted Answer

.112

Answer

.267

Answer

.164

Answer

.056

Question 16

What percentage of the days that it rained, did they forecast no rain?

Accepted Answer

About 14%

Answer

About 20%

Answer

About 18%

Answer

About 12%

Question 17

Out of the girls surveyed, what is the probability they have blonde hair (in simplest form)?

Accepted Answer

3/10

Answer

3/20

Answer

6/19

Answer

3/5

Question 18

What is the probability that a student who doesn't play an instrument plays on a sports team?

Accepted Answer

.2222

Answer

.7273

Answer

.8

Answer

.55

Question 19

What is the conditional frequency of students with hazel eyes that have red hair?

Accepted Answer

1/9

Answer

9/60

Answer

1/60

Question 20

What is the correlation between length of running start and distance of jump?

Accepted Answer

positive:  the further you run the further you jump

Answer

negative: the less you run the less distance of your jump

Answer

positive: the further your running start the less your distance

Question 21

What type of correlation does this graph have?

Accepted Answer

no association

Answer

Negative

Answer

positive

Question 22

Which scatter plot shows a negative relationship?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Question 23

Which scatter plot show a positive relationship?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Question 24

In the scatter plot, does the image shows a "Line of Best Fit"?

Accepted Answer

No

Answer

Yes

Question 25

The equation of the trend line
is y= 1/2x +1. Use the equation to determine the amount of time it would take to bike 20 laps.
*Look at the x and y axis first before starting the problem

Accepted Answer

11 minutes

Answer

38 minutes

Answer

41 minutes

Answer

10 minutes

Question 26

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 27

Based on the graph, if Joe earned $400, how many hours did he work?

Accepted Answer

20 hours

Answer

35 hours

Answer

45 hours

Answer

15 hours

Question 28

Rank these scatter plots according to the intensity of the correlation represented, from weakest to strongest.

Accepted Answer

1, 3, 4, 2

Answer

1, 2, 3, 4

Answer

2, 4, 3, 1

Answer

4, 3, 2, 1

Question 29

Shown is a residual plot. Would a linear regression model of the data be most appropriate?

Accepted Answer

YES

Answer

NO

Question 30

Which residual plot shows that a linear regression model would be most appropriate?

Accepted Answer

b

Answer

a

Answer

c

Question 31

Shown is a residual plot. Would a linear regression model of the data be most appropriate?

Accepted Answer

NO

Answer

YES

Question 32

After performing analyses on a set of data, Mrs. Schoeneck examined the scatter plot of the residual values for each analysis. Which scatter plot indicated the best linear fit for the data?

Accepted Answer

A

Answer

B

Answer

C

Question 33

What should a residual plot look like?

Accepted Answer

Random

Answer

Distinct Pattern

Answer

Curve

Question 34

Which equation do you use to calculate the residual?

Accepted Answer

actual- predicted

Answer

predicted - actual

Answer

run / rise

Answer

rise / run

Question 35

A correlation value (r) that has a strong, positive linear association would have a value close to

Accepted Answer

1

Answer

0

Answer

-1

Answer

Cannot be answered

Question 36

A scatterplot with a strong parabolic relationship would have a correlation (r) close to

Accepted Answer

0

Answer

1

Answer

-1

Answer

Cannot be determined

Question 37

Number of pets a person has and number of books a person has read

Accepted Answer

No Correlation

Answer

Positive Correlation

Answer

Negative Correlation

Question 38

Number of days absent from school vs. math average

Accepted Answer

Negative Correlation

Answer

Positive Correlation

Answer

No Correlation

Question 39

Distance traveled vs. amount of gas in the car

Accepted Answer

Negative Correlation

Answer

Positive Correlation

Answer

No Correlation

Question 40

Hours of studying vs. grades

Accepted Answer

Positive Correlation

Answer

Negative Correlation

Answer

No Correlation

Question 41

Estimate the correlation coefficient for this scatterplot.

Accepted Answer

B) r = 0.89

Answer

A) r = 1.2

Answer

C)r = 0

Answer

D) r = -0.89

Question 42

Estimate the correlation coefficient for this scatterplot.

Accepted Answer

A) r = -0.9

Answer

B) r = 1

Answer

C) r = 0.9

Answer

D) r = -1

Question 43

r=-0.89

Accepted Answer

Strong negative

Answer

Strong positive

Answer

Weak positive

Answer

Weak negative

Question 44

r=0.3

Accepted Answer

Weak positive

Answer

Strong positive

Answer

Strong negative

Answer

Weak negative

Question 45

Describe the relationship between the variables.

Accepted Answer

Weak negative correlation

Answer

Weak positive correlation

Answer

Strong positive correlation

Answer

Strong negative correlation

Question 46

Describe the relationship between the variables.

Accepted Answer

Weak negative correlation

Answer

Strong positive correlation

Answer

Weak positive correlation

Answer

Strong negative correlation

Question 47

Estimate the correlation coefficient

Accepted Answer

r=1

Answer

r=-1

Answer

r=-0.5

Answer

r=0.5

Question 48

Estimate the correlation coefficient.

Accepted Answer

r=0

Answer

r=-1

Answer

r=1

Answer

r=2

Question 49

Estimate the correlation coefficient.

Accepted Answer

r=0.5

Answer

r=-1

Answer

r=-0.5

Answer

r=1

Algebra Nation - Section 10

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