Mathematics

Grade10

Easy

Question

# What does it mean when the correlation coefficient is close (but not equal) to zero?

- There is zero correlation between the two variables
- There is a strong negative correlation between the two variables
- There is a strong positive correlation between the two variables
- There is a weak correlation between the two variables

## The correct answer is: There is a weak correlation between the two variables

### when the correlation coefficient is close (but not equal) to zero There is a weak correlation between the two variables.

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r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the correlation coefficient of the line?

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r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the correlation coefficient of the line?

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r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the y-intercept of the line?

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Which is the y-intercept of the line?

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r^{2} = 0.9944, r = 0.9972, a = 0.776823, b = 4.69062

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>>>Vertical shift of f(x) by 3/4 becomes 3/4(x)

>>>Shifting right the function becomes 3/4(x-2)

>>>Shifting right the function gives 3/4(x-2)-4.

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>>>Vertical shift of f(x) by 3/4 becomes 3/4(x)

>>>Shifting right the function becomes 3/4(x-2)

>>>Shifting right the function gives 3/4(x-2)-4.

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From the question it is clear that .

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From the question it is clear that .

So, the slope changes by a factor of 5; the y - intercept does not change.

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Given

So,

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Given

So,

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