The correct answer is c. Biased samples are NOT random. If you choose a couple people from <em>each grade </em>therefor the answer is c.
Answer:
232
Step-by-step explanation:
3016/13=232
use a calculator
We are given a line with the following data:
r-value = 0.657 (r)
standard deviation of x-coordinates = 2.445 (Sx)
standard deviation of y-coordinates = 9.902 (Sy)
We are asked to find the slope of the line up to 3 decimal places.
To find the slope of the line, based on the data that we have, we can use this formula:
slope, b = r * (Sy / Sx)
substitute the values to the formula:
b = 0.657 * ( 9.902 / 2.445 )
Solve for the b.
Therefore, the slope of the line is
b = 2.66078, round off to three decimal places:
b = 2.661 is the slope of the line.
Answer: -134.5
Step-by-step explanation:
4(-6^2+3) - 2 - 1/2 Exponents first
4(-36 +3) - 2 - 1/2 Now solve the parentheses
4(-33) -2 -1/2
-132- 2 -1/2
-134 - 1/2 = -134.5
