Statistics Scatterplots

Rohan, Isla, and Jackson are studying the relationship between the number of hours spent studying and the test scores of their classmates. What does a negative correlation in their scatterplot indicate?

• There is no relationship between the hours spent studying and test scores.

• As the number of hours spent studying increases, the test scores also increase.

• As the number of hours spent studying increases, the test scores decrease.

• As the number of hours spent studying decreases, the test scores also decrease.

Tags

CCSS.HSF.LE.B.5

In a science project, Evelyn, Ethan, and Kai are trying to identify outliers in a scatterplot of the relationship between the number of hours spent studying and test scores. How can they identify outliers in the scatterplot?

• By identifying data points that are similar to the main cluster of points.

• By observing data points that are significantly distant from the main cluster of points.

• By looking for data points that are close to the main cluster of points.

• By focusing on data points that are located in the center of the scatterplot.

Ethan and Noah are conducting a study on the relationship between the number of hours spent studying and test scores. What is the purpose of a scatterplot in this context?

• To calculate the correlation coefficient between hours spent studying and test scores.

• To display the relationship between hours spent studying and test scores.

• To compare the means of different groups, such as Abigail's study group and Ethan's study group.

• To show the distribution of a single variable, such as the number of hours spent studying.

Anika, Aria, and Olivia are working on a project for their statistics class. They are considering using a scatterplot to represent their data. What could be the limitations of using a scatterplot in their case?

• Scatterplots can represent more than two variables at a time.

• Scatterplots can accurately represent the distribution of data even with many overlapping points.

• Scatterplots are not suitable for representing categorical data.

• Scatterplots can only represent two variables at a time and may not accurately represent the distribution of data if there are many overlapping points.

What type of relationship does this graph have?

• Positive 

• Negative

• No Relationship

• Constant

Tags

CCSS.HSF-LE.A.1B

Mr. Thomas wanted to know if the amount of class time that he gave students to study affected their test scores.  What kind of relationship between class study time and test scores is shown on the scatter plot.

• No correlation

• Positive correlation

• Negative correlation

• Positive then negative correlation

The police department tracked the number of ticket writers and number of tickets issued for the past 8 weeks.  The scatter plot shows the results.  Which statement is true?

• More ticket writers results in fewer tickets issued.

• There were 50 tickets issued every week.

• When there are 10 ticket writers, there will be 800 tickets issued.

• More ticket writers results in more tickets issued.

Tags

CCSS.HSF.LE.B.5

The following scatter plot shows the weights and lengths of some dinosaurs.  Which statement accurately describes the information?

• The information shows a positive correlation.  The weight of a dinosaur tends to increase according to its length.

• The information shows a negative correlation.  the weight of a dinosaur tends to decrease according to its length.

• The information shows no correlation.  The weight and length vary according to the type of dinosaur.

• The information shows no correlation.  The relationship between the weight and length of a dinosaur is uncertain.

Which statement is the most accurate interpretation of the data?

• As time went by, the temperature tended to decrease

• As time went by the temperature tended to increase

• There is no relationship between time and temperature.

Make a prediction for a resting heart rate after 6 hours of exercise a week.

• 6

• 50

• 55

• 59