Answer:
I believe it is 1 and 1/6. Dont quote me on it tho. lol
Step-by-step explanation:
Is this supposed to be middle school math-
Answer:
False is the correct answer
6²=36
8²=64 add them 100≠9²
Answer:
Step-by-step explanation:
Solution A:
regression eq is
y=a+bx
IQ=a+b*Income
where b=r*sy/sx
=0.3*15/20000
=0.000225
a=ybar-bxbar
a=100-0.000225*60000
a=86.5
y=a+bx
y=86.5+0.000225*x
IQ=86.5+0.000225*income
For given income of 70000 we need to predict IQ
substitute income =70000 in regression equation obtained above we get
IQ=86.5+0.000225*70000
predicted IQ=102.25
Solution b:
since r=0.30
r sq=0.30*0.30
=0.09
=0.09*100
=9%
that is explained variance by regression eq is
9%
unexplained variance=100-9=91%
9% variance in IQ is explained by regression equation.
Solution-c:
correlation does not imply causation with correlation cannot predict that the child will have a higher IQ
we can get only the relationship between two variable with correlation,but we cant predict
