Histograms Review Mean, median, mode

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# Histograms Review Mean, median, mode - PowerPoint PPT Presentation

Histograms Review Mean, median, mode. Grade 8 Math. Minds On. Please define histogram: A graph with bars that show frequencies of data organized into intervals; the intervals line up side by side, without gaps, in the number line.

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## PowerPoint Slideshow about 'Histograms Review Mean, median, mode' - nevaeh

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### Histograms ReviewMean, median, mode

Minds On
• A graph with bars that show frequencies of data organized into intervals; the intervals line up side by side, without gaps, in the number line
• When you want to display the height of a class to see how many students in one class meet the height requirement required by attractions in Wonderland
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
• When you want to see how much percentage of Tax is spent on Education:
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
• When you try to see whether the students in the class prefer hockey or soccer
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
• When you want to see the biggest improvement time period of a hockey team
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
• When you want to find out the relationship between two values
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
• When you want to see how long roughly it takes 32 students to go to school
• A. a bar graph
• B. a pictograph
• C. a line graph
• D. a scatter plot
• E. a stem-and-leaf plot
• F. a circle graph
• G. a Histogram
Homework Checking
• Please check homework 4 and 8

### Mean, Median and Mode

Definition & Calculation
• Mean:
• Median:
• Mode:

2, 4, 8, 9, 10, 12, 15, 18, 20, 22

• Comparing groups of data by:comparing the mean, median & mode
Experiment
• Demonstration: volunteer for dropping and recording?
• Calculation:
• Mean:
• Median:
• Mode:
• Group!
• One dropper
• One catcher & recorder
• Repeat the experiment for 10 times, record the response times down
• Switch with your partner, repeat for 1o times, record the response times down
• Calculation:
• The mean, median and mode (3m)
• Drop the least measurement & recalculate the 3m
• Drop the greatest measurement & recalculate the 3m
• Drop both the least and the greatest & recalculate the 3m
Think:
• Was the mean, the median, or the mode affected more by leaving out the least and greatest measurements? Why?
• Was the mean, median, or the mode a better indicator of your reaction time?