Class A has 9 pupils and class B has 24 pupils.
1 answer:
Answer:
mean ≈ 25.45
Step-by-step explanation:
mean is calculated as
mean =
We require the sum for both classes
class A
mean = = 40 ( multiply both sides by 9 )
sum = 9 × 40 = 360
class B
mean = = 20 ( multiply both sides by 24
sum = 24 × 20 = 480
Total sum for both classes = 360 + 480 = 840 , then mean for both classes is
mean = ≈ 25.45 ( to 2 dec. places )
You might be interested in
Answer:
c. Weight is input, height is output
Step-by-step explanation:
It is given here that "Height is a function of Weight".
which means
Thus, value of Height is depend on the value of Weight.
Thus, Weight is input variable and Height is output variable.
Hence option (c) is correct.
Further,
The variable that we can change is called the Input variable.
The Output variable depends upon the input variable, as we change the value of the input variable the value of the output variable is also get changed.