6) answer is B , random sampling produces a representative sample
7) 0.1 = 10% so the answer is A, he saves 10% of his income
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Step-by-step explanation:
b I believe it is b hope that helps
Answer:
Negative correlation.
Step-by-step explanation:
Negative correlation means that as x increases, y decreases
Positive correlation means that as x increases, y also increases.
No correlation means that neither of the two above cases happens.
In the graph, we can see that on the right (when x is negative) the general y values are larger.
As x increases, the y-values decrease.
(Particularly, we could adjust these data with a linear equation with a negative slope)
Then this is a negative correlation.
