Understanding Data Sets

What is a data set?

• A mathematical operation

• A type of video game

• A collection of numbers related to a specific subject

• A single number representing data

In the pizza example, what does the data set represent?

• The number of pizzas ordered

• The number of friends

• The price of each pizza

• The number of slices each friend wants

How do you calculate the mean of a data set?

• Multiply all numbers together

• Add all numbers and divide by the count of numbers

• Subtract the smallest number from the largest

• Find the most frequently occurring number

What is the mean of the data set: 3, 5, 1, 2, 4?

• 5

• 2

• 3

• 4

What does the median represent in a data set?

• The smallest number

• The average of all numbers

• The middle number when ordered

• The largest number

If a data set has an even number of elements, how is the median found?

• By choosing the smallest number

• By adding all numbers together

• By choosing the largest number

• By averaging the two middle numbers

What is the mode of a data set?

• The difference between the largest and smallest numbers

• The middle number

• The average of all numbers

• The number that appears most frequently

In the example with slices of pizza, what is the mode if the data set is 3, 5, 1, 2, 4, 1?

• 3

• 2

• 4

• 1

How is the range of a data set calculated?

• By dividing the total by the number of elements

• By subtracting the smallest number from the largest

• By finding the most frequent number

• By adding all numbers together

What is the range of the data set: 3, 5, 1, 2, 4?

• 2

• 5

• 4

• 3