Finding the Median from a Dot Plot

In this video, Mr. J explains how to find the median of a data set using a Dot Plot. He demonstrates two methods: listing values in order and finding the median directly from the Dot Plot. The video provides a step-by-step guide to both methods, emphasizing the calculation of the median when there are two middle values. The example used involves distances of bike rides, and the median is calculated as 5.5 miles. The video concludes with a summary of the methods and encourages viewers to apply these techniques.

What is the median in a data set?

• The highest value

• The middle value

• The lowest value

• The average value

What is the first step in finding the median from a dot plot?

• Find the mean of the values

• List the values in order from least to greatest

• Identify the highest value

• Count the total number of values

How many values of '3' are there in the given data set?

• Four

• Three

• Two

• One

What do you do after listing the values from least to greatest?

• Find the highest value

• Count off values from each side

• Calculate the sum of all values

• Identify the lowest value

What is the median of the given data set?

• 5

• 6.5

• 6

• 5.5

How do you find the median when there are two middle values?

• Choose the higher value

• Choose the lower value

• Find the mean of the two values

• Add the two values

What is the total number of values in the data set?

• 16

• 17

• 19

• 18

What happens if the data set has an odd number of values?

• The median will be the highest value

• One value will be in the middle

• There will be two middle values

• The median will be the lowest value

What is another method to find the median from a dot plot?

• Count off values directly from the dot plot

• Calculate the range of the values

• Find the mode of the values

• List values in descending order

What is the final step in finding the median directly from the dot plot?

• Count off values from each side

• Identify the highest value

• List values in ascending order

• Calculate the sum of all values