Exploring 6th Grade Statistics Concepts

What is the objective of today's lesson?

• To calculate the mean of a data set

• To learn about standard deviation

• To calculate the median of a data set

• To understand dot plots

What is the first step in finding the median of a data set?

• Draw a dot plot

• Find the mode

• List the numbers from least to greatest

• Add all the numbers

How do you verify that you have the correct amount of numbers in your list?

• By finding the mean

• By drawing a dot plot

• By checking the sum

• By counting the numbers

What does each dot in a dot plot represent?

• A separate observation

• The median value

• The mean value

• A group of students

How many dots should be above the number 1 if there are three students with one sibling?

• Three dots

• One dot

• Four dots

• Two dots

What is the first step in finding the mean of a data set?

• Draw a dot plot

• Add up all the numbers

• Find the middle number

• List the numbers from least to greatest

How do you find the median in a data set with an odd number of points?

• List the numbers from least to greatest and find the middle number

• Find the mean of the two middle numbers

• Draw a dot plot and count the dots

• Add all the numbers and divide by the total count

What happens to the mean if a data point changes from 40 to 120?

• The mean increases

• The mean decreases

• The mean remains the same

• The mean becomes zero

Does changing the highest number in a data set affect the median?

• No, if the middle number remains the same

• Yes, it always affects the median

• No, it never affects the median

• Yes, but only if the data set has an even number of points

What is the median of the numbers 20 and 25?

• 24

• 23

• 22

• 22.5