Transcript File - Alexander Finley`s Portfolio

Box and Whisker Plots
Overview
Upper Quartile
Lower Quartile
Make your own!
Parts of the Box and Finding the median
Whisker
Finding the median
Locate the Median,
Upper and Lower
Quartile
Mini Quiz-You Try
Finding the Upper
Half
Finding the Lower
Half
Draw your Box
Compare 2 Box and
Whisker Plots
Finding the Upper
Quartile
Finding the Lower
Quartile
Make your Whisker
Review each section and fill in handout. When
done take assessment below
Assessment: Make your own Box and
Whisker Plot
By: Alexander Finley
Box-and-Whisker Plots
Box-and-whisker plots show the distribution of data.
10
20
A
30
B
40
50
C
D
60
E
70
F
A is an outlier. These are extreme numbers not part of data
B is the least value if there is not an outlier
C is the first or lower quartile . 25% of the data is below this value
D is the median or second quartile. 50% of the data is both above and below this
value
E is the third or upper quartile. 75% of the data is below this value
F is the greatest value.
The range.is the difference between least and greatest values
.
Click Mouse to Reveal Each Letter’s Name and Definition
Interpret Box-and-Whisker Plots
Skateboards Sold
0
10
20
30
40
50
60
Sports Stuff
1. Label the Box and Whisker plot above
2. What is the
Lowest Value __________
Check your
Lower Quartile _________
Answers on
Upper Quartile _________
Next Slide
Median
__________
Range
__________
If you get
stuck, click
left arrow to
review
Interpret Box-and-Whisker Plots
Skateboards Sold
0
10
20
30
40
50
Sports Stuff
1. Label the Box and Whisker plot above
2. What is the
Lowest Value=10
How did you
Lower Quartile=25
do?
Upper Quartile=40
Median= 35
Range=40
60
Interpret Box-and-Whisker Plots
Skateboards Sold
0
10
20
30
40
50
60
Sports Stuff
Mia’s Sports
Which store had the least sales of skateboards?
Which store had a greater range in sales of skateboards?
Which store had a median of 35 skateboards sold?
What is the lower quartile for Mia’s Sports?
What is the upper quartile for Sports Stuff?
Check
Answers on
Next Slide
Interpret Box-and-Whisker Plots
Skateboards Sold
0
10
20
30
40
50
60
Sports Stuff
Mia’s Sports
Which store had the least sales of skateboards? Mia’s
Which store had a greater range in sales of skateboards? They are the Same
Which store had a median of 35 skateboards sold? Sports Stuff
What is the lower quartile for Mia’s Sports? 15
What is the upper quartile for Sports Stuff? 40
Great Job! Click the right arrow to learn
about the upper quartile!
Finding the Upper Quartile
Please follow along and fill in handout
2, 4, 6, 8, 10, 12, 14
Find the median, place a triangle around it, click mouse one
time to reveal.
Remember, if there is an odd number of values the median
is in the middle. If there is an even number of values, take
the two in the middle, add, and divide by two.
Click the right arrow for the next step
Finding the Upper Quartile
2, 4, 6, 8, 10, 12, 14
You found the median, now find the upper half!
All the numbers to the right of the triangle make the upper
half, place a square around the upper half, click once to
reveal
Click the right arrow for the next step
Finding the Upper Quartile
2, 4, 6, 8, 10, 12, 14
You found the upper half! Now find the upper quartile!
To find the upper quartile, find the median of the upper half
which are the numbers in the square. Click the mouse once
to reveal!
Did you get it right on your handout?
Click the right arrow to learn about the lower quartile!
Finding the Lower Quartile
Please follow along and fill in handout
2, 4, 6, 8, 10, 12, 14
Find the median, place a triangle around it, click mouse one
time to reveal.
Remember, if there is an odd number of values the median
is in the middle. If there is an even number of values, take
the two in the middle, add, and divide by two.
Click the right arrow for the next step
Finding the Lower Quartile
2, 4, 6, 8, 10, 12, 14
You found the median, now find the lower half!
All the numbers to the left of the triangle make the lower
half, place a circle around the lower half, click once to reveal
Click the right arrow for the next step
Finding the Lower Quartile
2, 4, 6, 8, 10, 12, 14
You found the upper half! Now find the upper quartile!
To find the lower quartile, find the median of the lower half
which are the numbers in the circle. Click the mouse once
to reveal!
Did you get it right on your handout?
Click the right arrow to learn how to make your own box
and whisker plot
How to make a Box and Whisker Plot
2, 4, 6, 8, 10, 12, 14
Place a vertical line at your median, upper quartile and
lower quartile on your handout
If you need help finding, click the home button and
review the sections on upper and lower quartile
Click mouse once to reveal answer, click right arrow
to move to next step
How to make a Box and Whisker Plot
2, 4, 6, 8, 10, 12, 14
Now place horizontal lines at the top and bottom of the
vertical lines to make your box
Click mouse once to reveal box, click right arrow to
move to next step
How to make a Box and Whisker Plot
2, 4, 6, 8, 10, 12, 14
Great! Now you just need to add your whiskers to show the least and
greatest values! Click mouse once to reveal!
Click the right arrow to try and make box and whisker plot on your own!
Assessment
Using the following data please make your own
box and whisker plot. When finished please see
me to review.
4, 7, 9, 10, 12, 13, 14, 18
If you need help please click home button and
review how to make a box and whisker plot.