10.1 Scatter Plots

Poll

On a scale of 1-4, I feel comfortable using equations of a line

• 1 - I have no clue what an equation of a line is

• 2 - I figured it out for the test and forgot it all

• 3 - I think I can use it

• 4 - I know I can use

Multiple Choice

The equation of a line is

• $$m=\frac{x_2-x_1}{y_2-y_1}$$

• $$y=mx+b$$

Multiple Choice

What does m represent?

• y-intercept

• the equation

• slope

• x-axis

Multiple Choice

Which graph represents a scatter plot?

Multiple Choice

What does the prefix 'bi-' mean in the context of bivariate data?

• One

• Two

• Three

• Four

​- Name of Author

" Replace this with a quote, words full To have bdfvkbv thFor at someone important said and can inWspire the reader. " 

examples of Bivariate Data

Study Time vs. Test Scores
Height vs. Shoe Size
Time on Social Media vs. Hours of Sleep
Number of Siblings vs. Chores per Week
Screen Time vs. Physical Activity
(we need numbers)

examples of what is not Bivariate Data

Favorite color vs how many shoes you own
Sport you play vs how much you lift
How much music you listen to vs favorite band

Open Ended

Give me an example of Bivariate data

Multiple Choice

Describe the relationship shown in the picture.

• Strong Positive Correlation

• Strong Negative Correlation

• Weak Positive Correlation

• Weak Negative Correlation

Multiple Choice

Describe the relationship shown in the picture.

• Strong Positive Correlation

• Strong Negative Correlation

• Weak Positive Correlation

• Weak Negative Correlation

Multiple Choice

Describe the relationship shown in the picture.

• Strong Positive Correlation

• Strong Negative Correlation

• Weak Positive Correlation

• Weak Negative Correlation

Multiple Choice

Describe the relationship shown in the picture.

• NO Correlation

• ZERO Correlation

Multiple Choice

What is the point of the outlier in this scatter plot?

• (2, 3)

• (10, 12)

• (14, 4)

• (19,20)

Multiple Choice

What is a scatter plot used for in statistics?

• Representing univariate data

• Representing bivariate data

• Representing categorical data

• Representing time series data

Multiple Choice

The equation of a line is

• $$m=\frac{y_2-y_1}{x_2-x_1}$$

• $$y=mx+b$$

Multiple Choice

The formula for slope?

• $$m=\frac{y_2-y_1}{x_2-x_1}$$

• $$y=mx+b$$

Multiple Choice

What variable represents slope?

• y

• m

• x

• b

Multiple Choice

What variable represents y-intercept?

• y

• m

• x

• b

Multiple Choice

Why do we use the line of best fit?

• It is t

• It is always accurate

• It is the closest approximation to the expected outcome

• It is linear

Draw

Draw the Line of Best Fit

​Negative Slope

Draw

Draw the Line of Best Fit

​Positive Slope

Multiple Choice

Which equation would best represent the line of best fit?

• $$y=2x+5$$

• $$y=-2x-5$$

• $$y=-2x+5$$

• $$y=2x-5$$

Multiple Choice

Which equation would best represent the line of best fit?

• $$y=2x+5$$

• $$y=-2x-5$$

• $$y=-2x+5$$

• $$y=2x-5$$