The data (1.5.8.5.1) represent a random sample of the number of days absent from school for five students at Monta Vista High. Find the
mean and standard deviation of the data.
Select one
a. mean = 4; standard deviation = 2.68
b. mean = 4: standard deviation = 7.2
c. mean = 20; standard deviation = 7.6
d. mean = 4.4; standard deviation = 2.76

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

Step-by-step explanation:

For this case we have the following data given:

1,5,8,5,1

We can find the sample mean with the following formula:

And replacing we got:

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

And replacing we got:

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: