STATS - Exam 1

Question 1

How do you find the class boundaries?

Answer 1

you start with the a number before the actual data and then add a .5 to the upper class limit.

Question 2

How do you find the class midpoint?

Answer 2

You add the class together and dived by 2 for each data given.

Question 3

How do you find the relative frequency?

Answer 3

You divide the frequency by the sum of the frequency and multiple by 100 to get a percentage.

Question 4

How do you find the cumulative frequency?

Answer 4

you start off with the first data and then add down the list.

Question 5

How do you find the mean?

Answer 5

you add all of the data and divide it by how many number there is.

Question 6

How do you find the median?

Answer 6

You put the data in order from lowest to highest and the cancel them out from side to side.

Question 7

What do you do if there is two median?

Answer 7

You add both of the median and divide it by two.

Question 8

How do you find the mode?

Answer 8

You check to see which number was repeated the most from the data you are given.

Question 9

What is the empirical rule?

Answer 9

68%,95%, and 99.7%

Question 10

How do you find the coefficient of variation?

Answer 10

You first need to find the mean which will be “X”. then to find “S” you need to subtract X(from the data)-Mean