Creating Scatter Plots and Best-Fit Lines with TI Nspire

This video tutorial demonstrates how to graph two-variable statistics using a scatter plot and create a best fit line to analyze data trends. The instructor uses data from Valencia College to show the relationship between hours of sleep and GPA. The tutorial covers data entry into a spreadsheet, plotting the data on a scatter plot, and applying linear regression to fit a best fit line. The video concludes with a preview of the next topic, which will focus on finding the correlation of a scatter plot.

What is the primary purpose of creating a scatter plot with two variables?

• To compare the variables directly

• To create a visual representation of the relationship between two variables

• To calculate the exact values of each variable

• To demonstrate statistical formulas

Tags

CCSS.8.SP.A.1

Which calculator is used in the tutorial for graphing and analysis?

• Texas Instruments TI-84

• RTI Inspired

• HP Prime

• Casio FX

Tags

CCSS.HSF-IF.C.7E

What two types of data are being analyzed in the tutorial?

• Study hours and test scores

• Exercise hours and heart rate

• Hours of sleep and GPA

• Calories consumed and weight

Tags

CCSS.HSF-LE.A.1B

What tool is suggested to follow along with the data entry and analysis?

• The RTI Inspired calculator

• Pen and paper

• A spreadsheet software

• A scientific calculator

How many data points are entered into the calculator for analysis?

• 18

• 15

• 12

• 10

What variable is placed on the X-axis of the scatter plot?

• Hours of sleep

• Hours of study

• Test scores

• GPA

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What variable is placed on the Y-axis of the scatter plot?

• Hours of sleep

• Test scores

• Hours of study

• GPA

What does the best fit line in a scatter plot help to determine?

• The exact values of the variables

• The minimum value of the independent variable

• The relationship and trend between the two variables

• The maximum value of the dependent variable

Tags

CCSS.8.EE.B.5

How is the best fit line added to the scatter plot in the tutorial?

• Calculating the slope and intercept manually

• Using the 'analyze' function and selecting 'linear regression'

• Guessing the trend line

• By drawing it manually

Tags

CCSS.8.EE.B.5

What can be estimated using the equation of the best fit line?

• The total hours of study

• The GPA based on hours of sleep

• The number of data points

• The hours of sleep based on GPA