How strongly do physical characteristics of sisters and brothers correlate? The data in the table give the heights (in inches) of 1212 adult pairs. Brother 7171 6868 6666 6767 7070 7171 7070 7373 7272 6565 6666 7070 Sister 6969 6464 6565 6363 6565 6262 6565 6464 6666 5959 6262 6464 To access the data, click the link for your preferred software format.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.3: Using Data Displays
Problem 2C
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How strongly do physical characteristics of sisters and brothers correlate? The data in the table give the heights (in inches) of 1212 adult pairs.

Brother 7171 6868 6666 6767 7070 7171 7070 7373 7272 6565 6666 7070
Sister 6969 6464 6565 6363 6565 6262 6565 6464 6666 5959 6262 6464

To access the data, click the link for your preferred software format.

  CSV   Excel (xls)   Excel (xlsx)   JMP   Mac-Text   Minitab14-18   Minitab18+   PC-Text   R   SPSS   TI   CrunchIt!

 
© Macmillan Learning

Use your calculator or software to find the correlation, ?,�, and equation of the least‑squares regression line for predicting sister's height from brother's height, ?̂ .�^. Make a scatterplot of the data and add the regression line to your plot. Give your answer to three decimal places.   

Enter the equation of the least‑squares regression line, with the numerical values rounded to three decimal places and ?� as the explanatory variable. (If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)

?̂ =�^=
 
?=�=
 
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