Answer:
≈3.99938
Step-by-step explanation:
Answer:
B. Stratified random sample is the correct answer
A. 15 is the answer. 30+60=90 and 60/4 is 15
Answer:
One: Median = 2
Two: Mean = 3.25
Step-by-step explanation:
One
Put the dots in order
1 1 1 2 2 3 3
There are seven groups altogether.
The middle one is a 2.
The median is 2.
Two
The mean is the average.
The average of the 4 groups is
1 3 6 3 = 13
The average is the sum of the dots.
13/4 = 3.25
