Statistics Two Variable

What do the values on the x-axis represent?

• ESS score

• Math test score

• Age of student surveyed

• Grade level of the student surveyed

Tags

CCSS.HSF.LE.B.5

What do the values on the y axis represent?

• ESS score

• Math Test Score

• Age of the students surveyed

• Grade of the students surveyed

Tags

CCSS.HSF.LE.B.5

What does the ordered pair (5, 75) represent?

• 5 on the math test and 75 on the sleep score

• a 5th grader scored 75% on the math test

• 5 on the sleep score and 75% on the math test

• of the 5 students surveyed, they all scored a 75% on their math test

Describe the relationship between the ESS Score and the Math Test Score that you observe from the data shown.

• Positive correlation, as the ess score increases their math test scores increase

• Negative Correlation, as the ESS score increases their math test score decreases

• No Correlation, there is no correlation between the ESS score and their math test score

• Scatterplots cannot show a correlation they are just random plots on a graph

The relationship between the amount of data downloaded d, in megabytes, and the time t, in seconds, after the download started is shown. Which statements are true? Select all that apply.

• The data points on the scatter plot suggest a linear association.

• The data points on the scatter plot suggest a quadratic association.

• The data points on the scatter plot suggest a negative association.

• The data points on the scatter plot suggest a positive association.

The relationship between the amount of data downloaded d, in megabytes, and the time t, in seconds, after the download started is shown. Which statements are true? Select all that apply.

• For every second that passes, about 0.5 additional megabyte is downloaded.

• For every second that passes, about 1 additional megabyte is downloaded.

• The function that represents the line of best fit is approximately d(t) = 0.51t - 1.64.

• The function that represents the line of best fit is approximately d(t) = 1.04t + 0.51.

Tags

CCSS.HSF.LE.B.5

In a study of college freshmen, researchers found that students who watched TV for an hour or more on weeknights were significantly more likely to have high blood pressure, compared to those students who watched less than an hour of TV on weeknights.

Does this mean that watching more TV causes a person’s blood pressure to increase? Explain your reasoning.

• correlation doesn't mean causation

• correlation leads to causation

• correlation and causation are not related to each other

When looking at attendance data for the 2014-2015 school year, a principal graphed number of tardies, x, a student had when compared to their grade point average (GPA), y. The principal found the correlation coefficient to be r = -0.94. Pick the sentence that is true.

• There is a strong relationship between the number of tardies and the GPA.

• There is a weak relationship between the number of tardies and the GPA

When looking at attendance data for the 2014-2015 school year, a principal graphed number of tardies, x, a student had when compared to their grade point average (GPA), y. The principal found the correlation coefficient to be r = -0.94. Pick the sentence that is true.

• There is a linear relationship between x and y.

• There is a quadratic relationship between x and y.

• There is an exponential relationship between x and y.

Tags

CCSS.HSF-LE.A.1B

When looking at attendance data for the 2014-2015 school year, a principal graphed number of tardies, x, a student had when compared to their grade point average (GPA), y. The principal found the correlation coefficient to be r = -0.94. Pick the sentence that is true.

• The slope of the graph is negative.

• The slope of the graph is positive.

• There is no slope of the graph.

Tags

CCSS.HSF.LE.B.5