Statistic Review -1 (8A-8D)

Categorical data will use:

• Histogram

• Bar/Column Graph

Numerical data will use:

• Histogram

• Bar/Column Graph

Which interval has the greatest number of employees?

• 11-21
• 33-43
• 77-87
• 44-54

Is it a histogram or bar graph?

• Histogram

• Bar graph

How to find mean?

• add all values then divided by the number of values

• the most common value(s)

• order the data first then find the middle one

How to find median?

• add all values then divided by the number of values

• the most common value(s)

• order the data first then find the middle one

How to find mode?

• add all values then divided by the number of values

• the most common value(s)

• order the data first then find the middle one

Find the median of these numbers:
4,2,7,4,4,1

• 2
• 5
• 7
• 4

What is the mean of this set of data?

2, 15, 7

• 24

• 3

• 6

• 8

What is the mode?

• # happening the most
• the average
• biggest - smallest
• the middle #