Correlation

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Question 1 of 6

Which of the following scatter plots have negative correlations?

1. $D$ $D$
2. $C$ $C$
3. $B$ $B$
4. $A$ $A$

Question 2 of 6

2. Question
Which of the following scatter plots has the most accurate correlation?
- 1. $B$ $B$
- 2. $A$ $A$
- 3. $C$ $C$
- 4. $D$ $D$
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Correlation is a value between $- 1$ $-1$ and $1$ $1$ which describes how the values in the data relate to each other.

The accuracy of a correlation is determined on how less scattered that plots are.

Using the guide above, we can determine which of the scatter plots is the most accurate

Plot A

The scatter plot displays an upward slope but the plots are loose. Therefore, the accuracy of the correlation is accurate.

Plot B

The scatter plot does not display any visible direction. Therefore, the correlation has no line of best fit.

Plot C

The scatter plot displays an upward slope and the plots form a single straight line. Therefore, the accuracy of the correlation is very accurate.

Plot D

The scatter plot displays an downward slope but the plots are very loose. Therefore, the accuracy of the correlation is not very accurate.

Therefore, plot $C$ $C$ is the most accurate correlation.

Question 3 of 6

Which of the following scatter plots indicate the correlation between Study Time and Grades?

1. $A$ $A$
2. $B$ $B$
3. $C$ $C$
4. $D$ $D$

Question 4 of 6

Which of the following scatter plots indicate the correlation

r = - 0.8

$r=-0.8$ ?

1. $A$ $A$
2. $B$ $B$
3. $C$ $C$
4. $D$ $D$

Question 5 of 6

Match the correlation coefficient to each of the scatter plots.

r = 0.8

$r=0.8$

r = 0.3

$r=0.3$

r = 0

$r=0$

r = - 0.9

$r=-0.9$

$Plot A =$ $\text(Plot A) =$ (0.8)

$Plot B =$ $\text(Plot B) =$ (0.3)

$Plot C =$ $\text(Plot C) =$ (0)

$Plot D =$ $\text(Plot D) =$ (-0.9)

Question 6 of 6

Match the correlation coefficient to each of the scatter plots.

r = 0.25

$r=0.25$

r = - 0.7

$r=-0.7$

r = - 0.9

$r=-0.9$

r = 0.5

$r=0.5$

$Plot A =$ $\text(Plot A) =$ (0.25)

$Plot B =$ $\text(Plot B) =$ (-0.9)

$Plot C =$ $\text(Plot C) =$ (-0.7)

$Plot D =$ $\text(Plot D) =$ (0.5)

$Upward Slope$ $\text(Upward Slope)$	$=$ $=$	$Positive Correlation$ $\text(Positive Correlation)$
$Downward Slope$ $\text(Downward Slope)$	$=$ $=$	$Negative Correlation$ $\text(Negative Correlation)$
$No Direction$ $\text(No Direction)$	$=$ $=$	$Zero Correlation$ $\text(Zero Correlation)$

$Upward Slope$ $\text(Upward Slope)$	$=$ $=$	$Positive Correlation$ $\text(Positive Correlation)$
$Downward Slope$ $\text(Downward Slope)$	$=$ $=$	$Negative Correlation$ $\text(Negative Correlation)$
$No Direction$ $\text(No Direction)$	$=$ $=$	$Zero Correlation$ $\text(Zero Correlation)$

$Upward Slope$ $\text(Upward Slope)$	$=$ $=$	$Positive Correlation$ $\text(Positive Correlation)$
$Downward Slope$ $\text(Downward Slope)$	$=$ $=$	$Negative Correlation$ $\text(Negative Correlation)$
$No Direction$ $\text(No Direction)$	$=$ $=$	$Zero Correlation$ $\text(Zero Correlation)$

$Upward Slope$ $\text(Upward Slope)$	$=$ $=$	$Positive Correlation$ $\text(Positive Correlation)$
$Downward Slope$ $\text(Downward Slope)$	$=$ $=$	$Negative Correlation$ $\text(Negative Correlation)$
$No Direction$ $\text(No Direction)$	$=$ $=$	$Zero Correlation$ $\text(Zero Correlation)$

$Upward Slope$ $\text(Upward Slope)$	$=$ $=$	$Positive Correlation$ $\text(Positive Correlation)$
$Downward Slope$ $\text(Downward Slope)$	$=$ $=$	$Negative Correlation$ $\text(Negative Correlation)$
$No Direction$ $\text(No Direction)$	$=$ $=$	$Zero Correlation$ $\text(Zero Correlation)$

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