Scatterplot Regression Review

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 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

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.

Which statement is true about the scatter plots?

• Graph 1 shows a strong relationship, and Graph 2 shows a weak relationship.
• Graph 2 shows a strong relationship, and Graph 1 shows a weak relationship
• Graph 1 shows a negative correlation, and Graph 2 shows a positive correlation.  
• Graph 2 shows a negative correlation, and Graph 1 shows a positive correlation.

The scatterplot shows the amount of time played and the number of points scored by ten basketball players during their last four games. Which conclusion best describes the data?

• The players who scored the most points played the longest.
• There is no correlation between the time played and the number of points scored.
• There is a positive correlation between time played and the number of points scored.
• There is a negative correlation between time played and the number of points scored.