Scatterplot Introduction

When x=6, which number is closest to the value of y on the line of best fit in the graph below?

• 1
• 6
• 7
• 9

Which equation is closest to the line of best fit in the graph below?

• y= 0.9x + 3
• y= 0.7x + 6
• y= 0.8x + 5
• y= 13

Which equation represents a line of best fit for this graph?

• y= x
• y= 2x
• y= -x - 2
• y= 2x + 2

The line of best fit was calculated for the following scatter plot. Which equation best represents the line of best fit?

• y= x/3
• y= x/2
• y= 3x
• y= 2x

Hubert has a record of his heights from first grade through seventh grade. He constructed a scatter plot and line of best fit to show his height at each grade level. Which equation is most likely to represent the line of best fit?

• y= (1/41)x + (1/3)
• y= 41x + 3
• y= (1/3)x + 41
• y= 3x +41

The graph below shows the value of a computer given the age of the computer. Which equation would best fit the data?

• y= -250x + 2000
• y= 250x + 2000
• y= -250x - 2000
• y= 2000x - 250

The table shows the age and value of a vehicle over several years.  Which equation would best fit the data?

• y= -1500x + 20000
• y= 1500x + 20000
• y= -2000x + 22000
• y= 2000x + 22200

Which statement describes the relationship between the data sets displayed on the scatterplot?

• The number of pets owned by a student increases as the student’s science test score increases.
• The number of pets owned by a student decreases as the student’s science test score increases.
• The number of pets owned by a student remains the same as the student’s science test score increases.
• There is no relationship between the number of pets owned by a student and the student’s science test score.

Mrs. Patillo wanted to know whether there was a relationship between two sets of her students’ test scores. The scatterplot below shows the scores of her students. Which statement best describes the relationship?

• No correlation
• Constant relationship
• Negative correlation
• Positive correlation

The graph shows the sales at an ice cream shop. Which statement is supported by the data in the graph?

• Lower priced items have higher numbers of sales.
• Higher priced items have higher numbers of sales.
• Customers will not pay more than $3.50 for ice cream.
• The price does not affect the number of sales of ice cream products.