{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

1

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.
Based on the scatterplot, which statement is true?

The data show no correlation

The data show a positve correlation

The data show a negative correlation

There are not enough data points to determine correlation

1

The number of students, y, still participating in the final round of a school spelling bee compared to the number of spelling words attempted, x, can be represented by a scatter plot with a negative, linear association. Which equation for a line of best fit could be used to represent the number of students still participating in the final round of the school spelling bee given a number of spelling words attempted?

1

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.
On which day was the rainfall recorded an outlier?

1

7

17

20

1

A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?

1

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (^oF), that were recorded at different altitudes (x), in thousands of feet.
Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

1

A running club keeps track of the number of hours each person has trained for a race and the length of time it takes the person to run the race. A scatter plot is graphed with the x-axis indicating the number of hours a runner has trained and the y-axis indicating the time, in minutes, it took to run the race. The equation y=60-0.5x is used as the line of best fit of the data. What does the slope of the equation represent?

Runners will decrease their race time by 1 minute for every 2 hours they have trained.

Runners will increase their race time by 1 minute for every 2 hours they have trained.

Runners will decrease their race time by 2 minutes for every 1 hour they have trained.

Runners will increase their race time by 2 minutes for every 1 hour they have trained.

1

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.
Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

The slope of the line of best fit is approximately -26.5, which means that for every $2 increase in cost per ticket, the number of tickets sold decreased by 26.5.

The slope of the line of best fit is approximately -26.5, which means that for every $1 increase in cost per ticket, the number of tickets sold decreased by 26.5.

The slope of the line of best fit is approximately 26.5, which means that for every $2 increase in cost per ticket, the number of tickets sold increased by 26.5.

The slope of the line of best fit is approximately 26.5, which means that for every $1 increase in cost per ticket, the number of tickets sold increased by 26.5.

1

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.
How many of the students Blake interviewed participate in sports?

4

10

14

15

1

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.
Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

12%

24%

40%

67%

The scatter plot below shows the results of a survey of 16 people. They were asked how many days per week they eat breakfast and how many days per week they go to the gym.

null

0.5

What are the coordinates of the point that is the outlier of the data?

0.5

Explain what the point (outlier) represents.

1

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.
Explain why Jeff's line is not the line of best fit.

2

Copy - Grade 8 Math Unit 4 Assessment

Copy - Grade 8 Math Unit 4 Assessment

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.
Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.
On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (^oF), that were recorded at different altitudes (x), in thousands of feet.
Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.
Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.
How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.
Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

What are the coordinates of the point that is the outlier of the data?

Explain what the point (outlier) represents.

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.
Explain why Jeff's line is not the line of best fit.

How does the actual line of best fit compare with Jeff's line?

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.
Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.
On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (^oF), that were recorded at different altitudes (x), in thousands of feet.
Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.
Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.
How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.
Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

What are the coordinates of the point that is the outlier of the data?

Explain what the point (outlier) represents.

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.
Explain why Jeff's line is not the line of best fit.

How does the actual line of best fit compare with Jeff's line?

Copy - Grade 8 Math Unit 4 Assessment

Copy - Grade 8 Math Unit 4 Assessment

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (oF), that were recorded at different altitudes (x), in thousands of feet.Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

What are the coordinates of the point that is the outlier of the data?

Explain what the point (outlier) represents.

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.Explain why Jeff's line is not the line of best fit.

How does the actual line of best fit compare with Jeff's line?

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (oF), that were recorded at different altitudes (x), in thousands of feet.Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

What are the coordinates of the point that is the outlier of the data?

Explain what the point (outlier) represents.

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.Explain why Jeff's line is not the line of best fit.

How does the actual line of best fit compare with Jeff's line?

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.
Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.
On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (^oF), that were recorded at different altitudes (x), in thousands of feet.
Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.
Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.
How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.
Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.
Explain why Jeff's line is not the line of best fit.

The heights (y) of the tallest building in Pittsburgh in year x is shown in the scatter plot below.
Based on the scatterplot, which statement is true?

The scatter plot below shows the rainfall, in millimeters, recorded each day during a 20-day period.
On which day was the rainfall recorded an outlier?

A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?

The scatter plot below shows the temperatures (y), in degrees Fahrenheit (^oF), that were recorded at different altitudes (x), in thousands of feet.
Which equation could represent the line of best fit for the temperatures, in degrees Fahrenheit, based on the altitudes, in thousands of feet?

The number of tickets sold for events at a theater last year varied with the cost per ticket, as shown in the scatter plot below.
Based on the equation of the line of best fit for the scatter plot, which statement about the relationship between cost per ticket and number of tickets sold is true?

Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data.
How many of the students Blake interviewed participate in sports?

Some students were surveyed to determine if they prefer soccer or baseball. The results are shown in the two-way table below.
Based on the results of the survey, what percent of the girls surveyed prefer soccer to baseball?

Jeff drew a line through (0,0) and (7,7) and said it was the line of best fit for the data.
Explain why Jeff's line is not the line of best fit.