Scatter Plots & Data Analysis Unit Test
8 of 158 of 15 Items
Question
Use the image to answer the question.
An illustration shows the first quadrant of a coordinate plane titled Chapters of a Books versus pages. The x-axis shows chapters and ranges from 0 to 20 in increments of 1. The y-axis shows pages and ranges from 0 to 220 in increments of 20.
Ten points are plotted on the graph. The points are plotted at approximate coordinates left parenthesis 0 comma 0 right parenthesis, left parenthesis 3 comma 20 right parenthesis, left parenthesis 4 comma 45 right parenthesis, left parenthesis 5 comma 50 right parenthesis, left parenthesis 8 comma 95 right parenthesis, left parenthesis 10 comma 90 right parenthesis, left parenthesis 12 comma 130 right parenthesis, left parenthesis 17 comma 170 right parenthesis, left parenthesis 18 comma 160 right parenthesis, and left parenthesis 20 comma 210 right parenthesis. An upward slanting line starts at left parenthesis 0 comma 0 right parenthesis and continues to left parenthesis 17 comma 170 right parenthesis.
A librarian collected data on the number of pages in chapters of a book. Interpret the slope and the y-intercept of the linear model. Round the slope to the nearest hundredth.
(1 point)
Responses
For every chapter of a book, there is an average of 10 pages.
For every chapter of a book, there is an average of 10 pages.
For every chapter of a book, there is an average of 0.1 page.
For every chapter of a book, there is an average of 0.1 page.
For every chapter of a book, there is an average of110 page.
For every chapter of a book, there is an average of Start Fraction 1 over 10 End Fraction page.
For every 10 chapters of a book, there is an average of 1 page.
The correct response is:
For every chapter of a book, there is an average of 10 pages.
Scatter Plots & Data Analysis Unit Test
9 of 159 of 15 Items
Question
Use the image to answer the question.
A veterinarian collected data on the average weight of dogs by age in months. Interpret the slope and the y-intercept (0,0) of the linear model, using the ordered pair (9,42). Round the slope to the nearest hundredth.
(1 point)
Responses
Every month, a dog averages a gain of 4.3 pounds and weighs 0 pounds at birth.
Every month, a dog averages a gain of 4.3 pounds and weighs 0 pounds at birth.
Every 4.67 months, a dog averages a gain of 1 pound and weighs 0 pounds at birth.
Every 4.67 months, a dog averages a gain of 1 pound and weighs 0 pounds at birth.
Every month, a dog averages a gain of 4.67 pounds
Every month, a dog averages a gain of 4.67 pounds
Every month, a dog averages a gain of 0.21 pounds and weighs 0 pounds at birth.
The correct response is:
Every month, a dog averages a gain of 4.67 pounds
Scatter Plots & Data Analysis Unit Test
10 of 1510 of 15 Items
Question
Use the image to answer the question.
A scatterplot on a coordinate plane of quadrant 1 is titled as Snow Accumulation in Inches per Hour.
"The plane shows the x-axis, labeled as Hours, ranging from 0 to 6 in increments of 1, and the y-axis, labeled as Snow Accumulation in Inches, ranging from 0 to 12 in increments of 1. Six points are plotted and an upward line is drawn through or near the points. The line passes approximately through the following unlabeled points: left parenthesis 0 comma 0 right parenthesis, left parenthesis 1 comma 1.5 right parenthesis, left parenthesis 2 comma 4 right parenthesis, left parenthesis 3 comma 5 right parenthesis, left parenthesis 4 comma 7.5 right parenthesis, and left parenthesis 6 comma 10 right parenthesis."
A meteorologist collected data on a recent snowfall. The meteorologist graphed the data and found the equation of the trend line to be y=1.7x+0.1. If the snowfall continues at this pace, use the equation to predict the number of inches of snow after 10 hours. Round to the nearest tenth.
(1 point)
After 10 hours, the snowfall would be ...
inches.
To predict the number of inches of snow after 10 hours using the equation y = 1.7x + 0.1, we substitute x = 10 into the equation:
y = 1.7(10) + 0.1
y = 17 + 0.1
y = 17.1
After 10 hours, the snowfall would be 17.1 inches.
Scatter Plots & Data Analysis Unit Test
11 of 1511 of 15 Items
Question
Use the table to answer the question.
Apples Banana Oranges Totals
7th graders 44 120
8th graders 35 46
Totals 72 71
Constructing the two-way table, what is the total number of seventh graders who prefer bananas?
(1 point)
Responses
69
69
25
25
86
86
51
51
To find the total number of seventh graders who prefer bananas, we look at the table provided and see that the total number of seventh graders is 120. Then we look at the totals for the apples and oranges preferences for seventh graders, which is 44.
Since we have the total number of seventh graders and the number who prefer apples, we can subtract to find the number who prefer bananas:
Total Seventh Graders - Prefer Apples = Prefer Bananas
120 - 44 = 76
Therefore, the total number of seventh graders who prefer bananas is 76. However, this option was not provided in the response choices.
PICK ONE!!!!!
The correct response is:
69