Cara computes the mean and variance for the set 87, 46, 90, 78, and 89. She finds the mean to be 78. Her steps for finding the variance are shown below.
o2 - 187–7852 + (45–78)? +(90 - 78,2+(78–78,2 +(89 – 7832
5
2-(32)2 +
2 + (12)2 +0° +(11)
02 - 81-1024 + 144 +0 + 121
o2 = -678 = -135.5
What is the first error Cara made in computing the variance?
I’m

answer

see attachment

explanation

the given function is

this function has y-intercept at

-4 and a slope of 2.

note that, the graph has a positive slope.

the graph that represents this function is the straight line that moves upward from left to right.

the graph touches the y-axis at -4.

the correct choice is the graph shown in the attachment.

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

positive

step-by-step explanation:

the quadrant is facing upwards