Scatter Plots and Data Study Guide

For the scatter plot, label the association as positive, negative or none, linear, non-linear. Check all that apply....reminder, for linear ONLY you would determine positive or negative.

• Positive

• Negative

• No Association

• Linear

• Non-Linear

Which of the scatter plots could likely represent the number of food items ordered and the total number of calories consumed at a meal?

• 5 because it is a negative association

• 6 because there is no association

• 7 because it is a positive association

• 8 because it is a positive association

• 9 because it is a negative association

Is this scatter plot linear or non-linear?

• Linear

• Non-Linear

Are there any outliers in the data graphed?

• Yes, there is a point that is much lower than the rest.

• No, all of the points seem to be following a certain trend.

Is there clustering in the data graphed?

• Yes, there seems to be two distinct groups of data.

• No, there are no gaps in the data forming different groups.

Graph the scatter plots for Question 16 and describe any conclusions.

• The negative association shows that as the kilowatt hours increase, the total cost of the electricity bill decreases.

• There is no association

• The positive association shows that as the kilowatt hours increase, the total cost of the electricity bill increases.

Cory and Anna drew trend lines on the scatter plot shown. Who drew a line that best fits the data?

• Anna

• Cory

• Neither of them

• Both of them

What is an equation for the line of best fit?

• y = 25x + 225

• y = -25x + 225

• y = -25x - 225

• y = 25x - 225

Predict the number of cases of the flu that would occur if 300 students received a flu vaccine.

• 1115

• 860

• 1285

• 10

Predict how many students received a flu vaccine if a school had 65 cases of the flu.

• 105

• 80

• -80

• 37.5