Variance to be zero: only one condition that ll the values or measurements of variable must be same.
variance = summation of (x - a)²
where is x is each data value in the collection
a is average of all data in the collection.
Summation of squares is zero implies that each square is zero.
each x -a must be 0.
Answer: D
Step-by-step explanation:
1875/250
= 7.5
total combined weight/amount of cats
= mean
Answer:
the answer is 5
Step-by-step explanation:
f(4) = 3(4) -2
7 - 2 = 5
