Averages and Standard deviation from a table

Question 1

What is the mean?

Answer 1

All of the population (numbers) add together and divide by the amount of numbers.

Question 2

What is the median?

Answer 2

All of the numbers put in order from smallest to biggest, then the middle number. If the middle is in between to different numbers it is the number exactly on the middle of them two.

Question 3

What is the mode?

Answer 3

The most common number.

Question 4

What is the range?

Answer 4

He biggest number subtract the smallest.

Question 5

What is the best thing to use to find the average?

Answer 5

The mean

Question 6

What are the four main averages?

Answer 6

Mean, mode, median and range.

Question 7

How do you find the mean and standard deviation using a calculator for a list of numbers?

Answer 7

1. ) press mode
2. ) select option 2: STAT
3. ) select option 1: 1-VAR
4. ) enter your data into the X column
5. ) press shift then 1 and then 5: VAR
6. ) option 2 will give you the mean and option 3 will give you the standard deviation

Question 8

When finding the mean of a table what are the steps?

Answer 8

1. ) find the midpoint(x)
2. ) do the frequency x midpoint(x)
3. ) then add the frequency together and the fx
4. ) then divide the f by fx