Exploring Stem and Leaf Plots

Miss Lee introduces stem and leaf plots, explaining their purpose in visualizing data distribution. She guides students through creating a plot, organizing data by place value, and interpreting the plot to find measures like median, range, and mode. The video includes examples and exercises to reinforce learning, with a focus on understanding and analyzing data using stem and leaf plots.

What is the primary purpose of a stem and leaf plot?

• To calculate complex equations

• To create digital art

• To write computer code

• To visualize data distribution

In a stem and leaf plot, what does the 'leaf' typically represent?

• The largest place value in the data

• The highest value in the data set

• The smallest place value in the data

• The lowest value in the data set

What is the median value of the dataset in the example?

• 38

• 40

• 36

• 32

How is the range of the dataset calculated in the example?

• Sum of all values divided by total number of values

• Highest value minus lowest value

• Average of highest and lowest values

• Highest value plus lowest value

What is the mode of the dataset in the example?

• 14

• 19

• 38

• 55

How many vegetables had more than 35 milligrams of calcium?

• 7

• 8

• 9

• 10

What is the median race time in the complex plot example?

• 152 seconds

• 142 seconds

• 172 seconds

• 162 seconds

What is the range of the race times in the complex plot example?

• 51 seconds

• 61 seconds

• 71 seconds

• 81 seconds

Are there any gaps in the race time data?

• Yes, at 170 seconds

• No, data is continuous

• Yes, at 160 seconds

• Yes, at 180 seconds

What percentage of race times were greater than 155 seconds?

• 65%

• 55%

• 45%

• 35%