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Dennis_Churaev [7]
3 years ago
7

Your friend comes from a large family. This list shows the ages of all of the children in her family. What is the median age of

the children? 12, 9, 15, 7, 9, 13, 16
Mathematics
2 answers:
Alisiya [41]3 years ago
4 0

The median age is 12 because if you put them in order: 7,9,9,12,13,15,16 then you cross off one number from each side until you get to the middle number.

Vilka [71]3 years ago
3 0
The median would be 12!
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Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immedia
Hatshy [7]

This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y"  = -1.5x + 85.

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Answer:

Interpretation of coefficient of determination R² = 0.3721

R² = 0.3721, meaning 37.21% of the total variation in test scores can be explained by the least square regression line

Step-by-step explanation:  

Given the data in the question;

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Now, the coefficient of determination R² is square of correlation coefficient r

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user100 [1]

Answer:

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