The Ridgeport school district collected data about class size in the district. The table shows the class sizes for five
randomly selected kindergarten and seventh-grade
classes
Mean Mean absolute
deviation
Number of students in randomly
selected class
Kindergarten 19, 19.23, 30, 19
Seventh 27, 33, 34, 30, 31
grade
22
3.6
31
2.0
sed on these data, which statement is true?
A. The average size of a seventh-grade class is larger and varies
more than that of a kindergarten class.
B. The recommended number of students in a kindergarten class is
22.
C. Every seventh-grade class has 9 more students than a
kindergarten class.
D. The average size of a seventh-grade class is larger but varles less
than that of a kindergarten class.

Step-by-step explanation:

The answer is A

the answer is c just got it on ed

step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?