Predicting With Scatter Plots

____ a line that shows the general trend for a group of points on a graph.

• line of reflection

• line of best fit

• input lines with positivity

• negative association

bivariate data in which an increase in one data set results in an increase in the other data set.

• negative association

• positive association

• equal association

A graph that shows the relationship between two variables in a data set.

• line graph

• circle graph

• scatter plot

• box and whisker plot

___ data for two variables.

• trivariate

• bivariate

• positive

• negative

Based on the scatterplot, the best prediction of the total number of pages in a book with 6 chapters is ​ ​ (a)  

• 120 pages

• 140 pages

• 170 pages

• 220 pages

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

Mrs. Moises, the school counselor, keeps a candy jar in her office for students. During one week, she kept count of how many students came to visit her and the number of candies in the jar, as show in the scatter plot. Based on the trend line, what is the best prediction for the number of candies in the jar when 30 students visit her?

• 90

• 180

• 135

• 150

What relationship is shown in the scatter plot?

• As the cost goes down, the number sold goes down.

• As the cost goes up, the number sold goes down.

• As the cost goes down, the number sold remains the same.

• There is not relationship between cost and the number sold.

Based on this scatterplot, approximately what score would a student with 6 absences expect to receive on the final exam?

• 65

• 92

• 67

• 76

Based on the scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $135

• $115

• $105

• $150