The height (y) of a random student in grade x is shown in the scatter plot below.
Based on the scatter plot, which statement is true?
1 point
1
Question 2
2.
The number of students, y, passing math for the year compared to the number of hours they do work outside of school, x, can be represented by a scatter plot with a positive, linear association. Which equation for a line of best fit could be used to represent the number of students passing math for the year given the number of hours they study outside of the school day?
1 point
1
Question 3
3.
The scatter plot below shows the temperature, in oF, recorded each day for a 24-day period.
On which day was the temperature recorded an outlier?
1 point
1
Question 4
4.
A scatter plot is graphed on the coordinate grid shown below.
Which equation best describes a line of best fit for the data?
1 point
1
Question 5
5.
The scatter plot below shows the total weight (y), in pounds, that were recorded when people (x) entered an elevator with a heavy box somone left behind.
Which equation could represent the line of best fit for the total weight, in pounds, based on the number of passengers in the elevator with the box?
1 point
1
Question 6
6.
The math department keeps track of the number of hours that each student plays video games during a unit and their grades for the test. A scatter plot is graphed with the x-axis indicating the number of hours of video games played during the unit and the y-axis indicating the grade on the test as a percentage. The equation y=80-0.25x is used as the line of best fit of the data. What does the slope of the line of the equation represent?
1 point
1
Question 7
7.
The number of doohickies sold last month varied with the cost of the doohicky, 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 doohicky and number of dookickies sold is true?
1 point
1
Question 8
8.
Mr. Flicker interview 42 students to see whether they liked math and if they were passing math. The table below shows his data.
How many of the students Mr. Flicker interviewed do not like math?
1 point
1
Question 9
9.
Some teachers were surveyed to determine if they prefer coffee or tea. The results are shown in the two-way table below.
Based on the results of the survey, what percentage of female teachers prefer tea to coffee?
The scatter plot below shows the results of a survey of 12 students. They were asked how many days per week they stay up late playing video games and how many days per week they miss Morning Meeting.
0.5 points
0.5
Question 10
10.
What are the coordinates of the point that is the outlier of the data?
0.5 points
0.5
Question 11
11.
What does the outlier represent?
1 point
1
Question 12
12.
Jonica drew a line that went through (3,2) and 4,3) and said it was the line of best fit for the data.
Explain why Jonica's line is NOT a line of best fit.
2 points
2
Question 13
13.
How does the actual line of best fit compare with Jonica's line?
