CGA 16 Data CGA Review

Multiple Choice

Mr. Van made a graph to represent the time his students spent studying for their test and their actual test score. Which is the correct equation for the line of best fit?

• y = 1.4x + 55

• y = 1.4x – 84

• y = 0.72x + 60

• y = 0.72x + 56

Multiple Choice

Choose the scatter plot that suggests a linear relationship between x and y.

Multiple Choice

The scatter plot below shows the average yearly consumption of bottled water by people in the United States starting in 1990.

Using the line of best fit, predict the average consumption of bottled water in the year 2000?

• 20 gallons

• 18 gallons

• 22 gallons

• 19 gallons

Multiple Choice

Which relationship is shown by this 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 does down, the number sold remains the same.

• There is no relationship between cost and the number sold.

Multiple Choice

Jared collected data on the ages and heights of a random sample of elementary school students. If he plots the data on a scatter plot, what relationship will he most likely see between age and height?

• A negative correlation

• No correlation

• A positive correlation

• A constant correlation

Multiple Choice

Which graph represents the correlation of its given situation correctly?

Multiple Choice

Which statement correctly describes the data shown in the scatter plot?

• The scatter plot shows no association.

• The scatter plot shows a positive association.

• The point (18, 2) is an outlier.

• The scatter plot shows no association.

Multiple Choice

The scatterplot shows the heights of Ferris wheels and the years they were built.

Which statement is true about the scatterplot?

• All Ferris wheels built before 1980 must have been less than 60 meters high.

• Based on the line of best fit, Ferris wheel heights increase about 25 meters every 10 years.

• Each Ferris wheel is taller than all Ferris wheels that were built earlier.

• Each year, more Ferris wheels were built than the year before.

Multiple Choice

A baseball coach graphs some data and finds the line of best fit.

The equation for the line of best fit is y = 0.32x – 20.51, where x is the number of times at bat and y is the number of hits.

How many hits should he expect from a player who is at bat 175 times?

• 35 hits

• 49 hits

• 609 hits

• 62 hits

Multiple Choice

The number of hours spent on math homework each week and the final exam grades for 12 students in Mr. Dylan's algebra class are plotted in the scatter plot.

Based on the information given, which exam grade is the best prediction for a student who spends about 4 hours on math homework each week.

• 62

• 72

• 82

• 92