How to Make a Grouped Frequency Table (Grouped Frequency Distribution Table) | Math with Mr. J

What is the main purpose of a frequency table?

• To make data harder to understand

• To organize and show data clearly

• To hide important numbers

• To only show the biggest numbers

If the oldest teacher is 65 years old and the youngest is 23 years old, what is the range of ages?

• 88

• 42

• 23

• 65

If the range of ages is 42 and you want to divide the data into 5 groups (classes), what is the calculated class width before rounding?

• 5

• 8

• 8.4

• 9

When you calculate the class width for a frequency table, what is the rule for rounding the number you get?

• Always round down

• Always round to the nearest whole number

• Always round up

• Round up only if it's a decimal

What is the result of dividing the range by the number of classes before rounding?

• 8.4

• 9

• 10

• 42

How many groups (classes) are used to organize the ages of high school teachers?

• 4

• 5

• 6

• 10

How many numbers are included in the class interval 20-29?

• 8

• 9

• 10

• 11

How many teachers are in the age group 40-49 years?

• 5

• 6

• 8

• 9