ANSWER:
a scientist who studies pattern of diseases called epidemiologists
~batmans wife dun dun dun...aka ~serenitybella
Answer: the constitution if we are taking about the United States
Explanation:
Answer:
degree of freedom is 2
Explanation:
We have here,
Physical activity classified as "positive attitude" or "negative attitude"
General activity level was classified as active, mildly active, and inactive.
Degree of freedom (Row-1)(Column -1) = (2-1)(3-1)=2
Therefore degree of freedom is 2
