Mathematics

Grade10

Easy

Question

# What does a correlation coefficient of r = -0.8 reveal about the data it describes?

- There is no 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 positive correlation between the two variables

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

### a correlation coefficient of r = -0.8 reveals that There is a strong negative correlation between the two variables.

### Related Questions to study

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### What does a correlation coefficient of r = 0.3 reveal about the data it describes?

### What does a correlation coefficient of r = 0.3 reveal about the data it describes?

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

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### What does it mean when the correlation coefficient is exactly equal to zero?

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### What does it mean when the correlation coefficient is close to -1 ?

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### What does it mean when the correlation coefficient is close to 1 ?

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### What is a bivariate data set?

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### Your linear regression function read as follows:

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

Which is the correlation coefficient of the line?

### Your linear regression function read as follows:

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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### Your linear regression function read as follows:

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

Which is the y-intercept of the line?

### Your linear regression function read as follows:

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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### Your linear regression function read as follows:

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

Which is the slope of the line?

### Your linear regression function read as follows:

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

Which is the slope of the line?

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### What function determines the equation of a line of best fit?

### What function determines the equation of a line of best fit?

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### How can you evaluate the goodness of fit for a line of best fit for a paired data set?

### How can you evaluate the goodness of fit for a line of best fit for a paired data set?

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### Jhon draws a trend line for the scatter plot in item 3 and writes the equation y = 6.5x + 12 to represent the line. Use her equation to predict how much she will spend if she buys 7 books

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### Let . Suppose you subtract 5 from the input of the f to create the new function g, then multiply the input of the function g by 3 to create a function h. Write the equation that represents h?

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### If is the transformation of after a vertical compression by , a shift right by 2, and a shift down by 4. What a function for .

>>>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.

### If is the transformation of after a vertical compression by , a shift right by 2, and a shift down by 4. What a function for .

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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 .

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

### Which of the following describes the difference between the graph of f and the graph of the input of f multiplied by 5?

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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.