Variance = summation of (x - mean)^2 all divided by the number of dataset.
mean = (17 + 5 + 11 + 1 + 11)/5 = 9
Variance = [(17 - 9)^2 + (5 - 9)^2 + (11 - 9)^2 + (1 - 9)^2 + (11 - 9)^2]/5 = (8^2 + (-4)^2 + 2^2 + (-8)^2 + 2^2}/5 = (64 + 16 + 4 + 64 + 4)/5 = 152/5 = 30.4
no number can have a positive and a negative at the same time. a negative number has a negative sign and a positive number has a plus sign.
Answer:
y=(0,-3)
Step-by-step explanation:
To find the y-intercept, substitute in 0 for x and solve for y
So the total number of students is 50, and you want to find 32/50. and that is equal to 64%
