AnswersAlgebra Concepts and ConnectionsInvestigating Data

Practice Test Answers

10 verified answers1 views
1
Free Preview

What is the mean of the data?

A
5
B
30
C
10
D
50
2
Free Preview

Which statement is true about the data point 84?

A
It is within 2 standard deviations of the mean.
B
It is exactly 4 standard deviations from the mean.
C
It is within 1 standard deviation of the mean.
D
It is exactly 3 standard deviations from the mean.
3

What is the correlation coefficient for the data in the table?

A
0 point 9 9 3
B
negative 0 point 9 9 3
C
negative 0 point 7 9 1
D
0 point 7 9 1
4

The box plot represents the number of math problems on the quizzes for an algebra course. Expand Image What is the range of the data?

A
7
B
9
C
6
D
10
5

Which data set has an outlier?

A
2, 3, 5, 7, 8, 8, 9, 10, 12, 17
B
3, 6, 7, 7, 8, 8, 9, 9, 9, 10
C
4, 4, 4, 8, 9, 9, 11, 18
D
6, 13, 13, 15, 15, 18, 18, 22
6

Which point is an approximate extrapolation for x is equal to 30 from the line of best fit?

A
44 comma 30
B
23 comma 30
C
30 comma 38
D
30 comma 72
7

According to the line of best fit, about how many ounces of frozen yogurt can someone purchase for 5 dollars ?

A
15 point 5
B
2
C
1 point 5
D
13
8

Which dot plot could represent the same data as the frequency table?

A
Image with description A number line going from 25 to 45. There is 1 dot above 26, 27, 33, 40, 44. There are 2 dots above 29, 30, 32, 35, 38, 45. There are 3 dots above 39.
B
Image with description A number line going from 25 to 45. There is 1 dot above 26, 31, 33, 34, 41, 44. There are 2 dots above 30, 35, 37. There are 3 dots above 32, 40.
C
Image with description A number line going from 25 to 45. There is 1 dot above 26, 28, 29, 33, 44. There are 2 dots above 30, 35, 38. There are 3 dots above 32, 40.
D
Image with description A number line going from 25 to 45. There is 1 dot above 26, 28, 29, 33, 39, 44. There are 2 dots above 31, 35, 36, 38. There are 3 dots above 41.
9

Which best describes the strength of the model?

A
a weak positive correlation
B
a weak negative correlation
C
a strong positive correlation
D
a strong negative correlation
10

How does the 100 dollars gift card affect the measure of center of the data?

A
It increases the mean value of the prizes.
B
It decreases the mean value of the prizes.
C
It decreases the median value of the prizes.
D
It increases the median value of the prizes.

Did you find these answers helpful?

More from this Course

practice test
20 verified answers

Practice Test

practice test
14 verified answers

Practice Test

Quiz
22 verified answers

Test

Practice Test Answers — Algebra Concepts and…