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Gizmo Scatter plot Answer Key./Trends in Scatter Plots Answer Key

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Gizmo Scatter plot Answer Key./Trends in Scatter Plots Answer Key Vocabulary: correlation, scatter plot, slope, trend line, y-intercept Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinki...

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  • June 16, 2023
  • 8
  • 2022/2023
  • Exam (elaborations)
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  • gizmo scatter plot answer keytrends in scatter p

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  • Gizmo Scatter plot Answer Key./Trends in Scatter P
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Gizmo Scatter plot Answer Key./Trends in Scatter Plots Answer
Key

Vocabulary: correlation, scatter plot, slope, trend line, y-intercept


Prior Knowledge Questions (Do these BEFORE using the
Gizmo.) [Note: The purpose of these questions is to activate prior
knowledge and get students thinking. Students who do not already
know the answers will benefit from the class discussion.]

A school nurse records the age and height of each
student she sees in a week. Then she makes a
scatter plot showing the ages of students (in years)
on the x-axis and their heights (in centimeters) on
the y-axis.

1. The red dot has the coordinates (5, 105). What
do you know about the student represented by
this point?

The student is 5 years old and 105 centimeters tall.


2. Based on the graph, how do you think age and height are related?

The graph shows that older kids tend to be taller than younger kids.


Gizmo Warm-up
Because we grow as we get older, a scatter plot of
height vs. age will show that older children are
generally taller than younger children. When two
variables are related, like age and height, they are
said to be correlated.

The Trends in Scatter Plots Gizmo explores different
types of correlation. To begin, check that the slider
is close to the Positive trend side.

1. When there is a positive trend (or positive correlation), do the y-values of the

points on the scatter plot tend to increase or decrease as the x-values

increase? Increase.


2. Move the slider to the Negative trend side. When there is a negative trend (or

negative correlation), how to the y-values change as the x-values increase?

Decrease.

, 3. Move the slider to the middle, under No trend. What does the scatter plot look like now?

The points appear to be placed randomly over the grid, with no apparent trend.



This study source was downloaded by 100000866603821 from CourseHero.com on 06-16-2023 09:07:50 GMT -05:00
2019

https://www.coursehero.com/file/56525928/Gizmo-Scatterplot-Answer-Keypdf/

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