Based on the scatter plot below, it appears that: Infant’s birth weight is uncor
ID: 3176370 • Letter: B
Question
Based on the scatter plot below, it appears that:
Infant’s birth weight is uncorrelated with mother’s pre-pregnancy weight.
Infant’s birth weight is positively correlated with mother’s pre-pregnancy weight.
Infant’s birth weight is negatively correlated with mother’s pre-pregnancy weight
It can be concluded that mother’s pre-pregnancy weight causes higher birth weights.
a.Infant’s birth weight is uncorrelated with mother’s pre-pregnancy weight.
b.Infant’s birth weight is positively correlated with mother’s pre-pregnancy weight.
c.Infant’s birth weight is negatively correlated with mother’s pre-pregnancy weight
d.It can be concluded that mother’s pre-pregnancy weight causes higher birth weights.
Explanation / Answer
Can't seent he plot.
But here' how to solve if you can see the image yourself?
1. If points are scattered with no "direction" then it is a random scatter plot which is UNCORRELATED. Choose option 1 is this is the case.
2. If there is a positive slope created by the best fit line ( passing thru /between most of the points) then it' option B
3. If there is a negative slope created by the best fit line ( passing thru /between most of the points) then it' option C
4. Ruled out. This cannot be said. Cause-effect direction cannot be attributed to one vairable. i.e. Direciton of effect is not known in correlation. So,this option is definitely wrong ( u can negative this optio w/0 picture too).
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