Question

age (x): 1, 2, 3, 4, 5, 6, 3, 5, 2, 4 Vocab (y) 3, 220,...

age (x): 1, 2, 3, 4, 5, 6, 3, 5, 2, 4

Vocab (y) 3, 220, 540, 1100, 2100, 2600, 730, 2200, 260, 1200

Predict the vocabulary of a 3.5 year old using your obtained regression line

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

We can use here Scatter plot by Excel.
Step1) Enter data in Excel.

Step 2) Select data >>click on insert tab >>Select scatter plot >>Select scatter plot with function.

or

We can use here Excel for regression equation

Step 1) Enter data in Excel .

Step 2) Data >>Data analysis >>Regression >>Select y and x values separately >>Ok

Therefore, we have regression equation is ,

or

Vocab = 566.1*age - 886

Substitute x= 3.5

=1095.35

Therefore, predicted the vocabulary is approximately 1096 for 3.5 year old .

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