Calculating the Correlation Coefficient with TI-84

What is the main objective of the tutorial?

• To perform hypothesis testing using the TI-84 calculator.

• To find the correlation coefficient using the TI-84 calculator.

• To understand the concept of correlation.

• To learn how to input data into the TI-84 calculator.

Which menu should you access to input data into the TI-84 calculator?

• CALC

• STAT

• TESTS

• MODE

In which lists did the instructor input the tattoos and teeth data?

• L3 and L4

• L1 and L3

• L2 and L3

• L1 and L2

Which function is used to calculate the correlation coefficient in the TI-84 calculator?

• ExpReg

• QuadReg

• LinReg(ax+b)

• LogReg

What should you enable to see the correlation coefficient 'r' in the output?

• DiagnosticOn

• Table

• StatPlot

• Graph

What does a correlation coefficient of -0.92 indicate?

• No relationship

• A strong negative linear relationship

• A weak positive linear relationship

• A strong positive linear relationship

What happens to the number of teeth as the number of tattoos increases, according to the correlation coefficient?

• The number of teeth decreases.

• The number of teeth remains the same.

• The number of teeth fluctuates randomly.

• The number of teeth increases.

Which menu contains the linear regression t-test in the TI-84 calculator?

• CALC

• STAT

• TESTS

• MODE

What is the advantage of using the linear regression t-test to find the correlation coefficient?

• It automatically gives 'r' without enabling DiagnosticOn.

• It is faster to compute.

• It provides more accurate results.

• It provides a graphical representation.

What should you do if you want to see more information in the output of the linear regression t-test?

• Press the up arrow.

• Press the left arrow.

• Press the down arrow.

• Press the right arrow.