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?
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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?
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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Your linear regression function read as follows:
r2 = 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:
r2 = 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:
r2 = 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:
r2 = 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:
r2 = 0.9944, r = 0.9972, a = 0.776823, b = 4.69062
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r2 = 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?
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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?
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
