Mathematics

Grade10

Easy

Question

# What are the signs that a residual plot shows a line of best fit ?

i) The residual values are distributed in a clear pattern on both sides of the y-axis.

ii) The residual values are randomly distributed on either side of the x-axis.

iii) The residual values are randomly distributed on either side of the y-axis.

iv) The residual values are clustered close to the x-axis.

- i
- ii
- iii and i
- ii and iv

## The correct answer is: ii and iv

### the signs that a residual plot shows a line of best fit is

The residual values are randomly distributed on either side of the x-axis.

The residual values are clustered close to the x-axis.

### Related Questions to study

Mathematics

### What is a residual ?

i) The difference between the y-value of a data point and the corresponding y-value from the line of best fit.

ii) Actual y-value minus predicted y-value.

iii) All the remaining points that the line of best fit did NOT touch.

iv) The ratio of how many data points are on the line vice not on the line.

### What is a residual ?

i) The difference between the y-value of a data point and the corresponding y-value from the line of best fit.

ii) Actual y-value minus predicted y-value.

iii) All the remaining points that the line of best fit did NOT touch.

iv) The ratio of how many data points are on the line vice not on the line.

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

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

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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?

MathematicsGrade10

Mathematics

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

### 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?

### 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 ?

### 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 ?

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

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### What is a bivariate data set?

### What is a bivariate data set?

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Mathematics

### 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?

MathematicsGrade10

Mathematics

### 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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Mathematics

### 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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Mathematics

### 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

### 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?

### 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?

MathematicsGrade10