ANSWER
{},{1},{3},{5},{7},{1,3},{1,5},{1,7},{3,5},{3,7},{5,7},{1,3,5},{1,3,7},{3,5,7},{1,5,7},{1,3,5,7}
EXPLANATION
The given set is {1,3,5,7}.
This set has
subsets.
Where n=4 is the number of elements in the set.
Recall that the null set is a subset of every set and every set is a subset of itself.
The subsets are:
{}
{1},{3},{5},{7}
{1,3},{1,5},{1,7},{3,5},{3,7},{5,7}
{1,3,5},{1,3,7},{3,5,7},{1,5,7}
{1,3,5,7}
ANSWER:
[a] A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable. The slope of the line is b, and a is the intercept (the value of y when x = 0).
[b] In the equation of a straight line (when the equation is written as “y = mx + b”), the slope is the number “m” that is multiplied on the x, and “b” is the y-intercept (that is, the point where the line crosses the vertical y-axis). This useful form of the line equation is sensibly named the “Slope-intercepts form”.
NOTE: See picture attached.
