Answer:
4/3
Step-by-step explanation:
(4-8)/(2-5) = -4/-3 = 4/3
Answer:
- 2
Step-by-step explanation:
Note that the values of x represent the input, while the values of f(x) represent the output.
From the column for f(x)
The only value on the list that is an output is - 2
Answer:
142.5 cm2
Step-by-step explanation:
The small markings create a new height, so that would be 9.5 cm.
Multiply:
9.5x15=142.5
Therefore, the area is 142.5 cm2
To compare the two classes, the Coefficient of Variation (COV) can be used. The formula for COV is this:
C = s / x
where s is the standard deviation and x is the mean
For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)
For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)
The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.
