The accompanying data on x= head circumference z score (a comparison score with peers of the same age - a positive score suggests a larger size than for peers) at age of 6 to 14 months and y =volume of cerebral grey matter (in ml) at age 2 to 5 years were read from a graph in an article. A) what is the value of the correlation coefficient? (Give the answer to two decimal places.) r=
B)Find the equation of the least- squares lines. (Give the answer to two decimal places.)
C) Predict the volume of cerebral grey matter for a child whose head circumference z score at age 12 months was 1.9. (Give the answer to two decimal places.)

, and volume of cerebral brey matter for a child whose head circumference Z score at age 12 months was 1.9 is  

Step-by-step explanation:

We attached a table below,

 We attached a table below,

Therefore ,

correlation coefficient  

   We calculate the least squares equation.

Now , calculate intercept coefficient.

Therefore, the regression equation is,

   Find the volume of cerebral brey matter for a child whose head circumference Z score at age 12 months was 1.8

2.83941151 would be the answer you're looking for! : )

this is a very good question

step-by-step explanation:

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