Comparing Data Sets Answers

The graphs below show the test scores for students in different subject areas and the time the students spent studying for the tests.Math Scores vs. Hours Spent StudyingScience Scores vs. Hours Spent StudyingSpelling Scores vs. Hours Spent StudyingHistory Scores vs. Hours Spent StudyingWhich graph shows the strongest association between the hours spent studying and the test scores?

The graph below shows the heights and arm spans of students in a classroom.Height and Arm Span of StudentsBased on the graph, which is the best prediction of the height of a student with an arm span of 143 cm?

The graph below shows the daily high temperature and bottled water sales for a street vendor.Daily High Temperatures and Bottled Water SalesWhat relationship exists between the daily high temperature and bottled water sales?

Kiara made the table below to show the IQ scores and grade point averages (GPAs) of students in her class. She made another table to show the standardized test scores and IQ scores.IQ, GPA, and SAT ScoresIQGPA IQStandardized Test Score1203.7 1201540852.3 858001103.0 1101,200962.7 9610001002.9 1001100She graphs the data in each table and writes the rounded values as shown for the regression line .Next, Kiara uses the steps below to predict a student’s standardized test score based on the student’s GPA of 4.0.Step 1Write the equation of the trend line for IQ and GPA.Step 2Write the equation of the trend line for IQ and standardized test score.Step 3Find the IQ that is expected from a GPA of 4.0.The IQ is about 122.5.Step 4Find the corresponding standardized test score for an IQ of 122.5.The standardized test score is 523.In which step did Kiara make the first error?

The height a plant grows is dependent on the amount of fertilizer given to the plant. The table below shows the amount of fertilizer a plant gets and the height the plant grows.Fertilizer and Height of PlantFertilizer (oz)Height of Plant(in.)1755019258130361283518456Nina graphs the data in the table and writes the rounded values for a and b as shown below for the regression line . Which explains how the fertilizer affects the growth of the plant?

One graph below shows the language arts test scores for students versus the time they spent studying. The other graph shows the language arts test scores versus the spelling test scores for the students.Graph 1: Language Arts Scores vs. Hours Spent StudyingGraph 2: Language Arts Scores vs. Spelling Test ScoresHow do the graphs compare?