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Not your average video:
Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.
Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.
Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.
Descriptive Statistics
Watch comprehensive video reviews for Descriptive Statistics, designed for final exam preparation. Each video includes integrated problems you can solve alongside detailed solutions.
Not your average video:
Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.
Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.
Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.
Not your average video:
Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.
Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.
Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.
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SL 4.10
In the same way that we can plot a straight line minimizing the vertical distances from points (x,y), we can plot a straight line minimizing the horizontal distances. This is called an x on y regression line.
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With this line we can make reliable predictions of x given y, so long as we are not extrpolating.
Example
Find the x on y regression line for the following data, and hence predict x when y=14.
Using a calculator (putting the y-values in the Xlist
and x-values in the Ylist
) we find
Plugging in y=14, we find x=4.72 (or 4.73 is you use exact values).
SL 4.10
In the same way that we can plot a straight line minimizing the vertical distances from points (x,y), we can plot a straight line minimizing the horizontal distances. This is called an x on y regression line.
Powered by Desmos
With this line we can make reliable predictions of x given y, so long as we are not extrpolating.
Example
Find the x on y regression line for the following data, and hence predict x when y=14.
Using a calculator (putting the y-values in the Xlist
and x-values in the Ylist
) we find
Plugging in y=14, we find x=4.72 (or 4.73 is you use exact values).