Iar Math Statistics

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

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 6 chapters. 

• ≅100 pages

• ≅170 pages

• ≅60 pages

• ≅20 pages

What is the mean of the following set of numbers: 4, 8, 12, 16, 20?

Mathematical Equivalence

ON

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Mrs. Wendel made a scatte rplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatte rplot, a student with 6 absences should get approximately what score on the final exam? 

• 65

• 92

• 70

• 76

In the equation y=mx+b, m is the ____.

• Slope

• Y-intercept

• X-intercept

• Origin

the slant of a line

• trend line

• dependent

• slope

• independent

From the problem below what is the expression from clue 2? Mrs. Johnson told her class she was thinking of two numbers. She gave them two clues. Clue 1: The larger number is 2 less than 6 times the smaller number. Clue 2: The larger number is 19 more than 3 times the smaller number. Write an equation that can be used to determine the two numbers Mrs. Johnson was thinking

• y = 3x + 19

• y = 2x - 6

• y = 29 + 3x

• y = 2x + 19

Find the slope

• -5/3

• -3/5

• 5/3

• 3/5