Chapter Zero - Anderson's Blog
Chapter Zero Notes
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Essential Understanding: Mathematics is used to model real world situations.
Essential Question: How can we use graphs and statistics to analyze real world data?
Objectives: To be able to find mean, median, mode and other descriptive statistics. To be able to represent data in a multitude of different statistical graphs.
Shoe Size: 6, 7, 9 11, 14, 12, 8, 7.5, 9, 5
Mean: ____________________________________________________________________________________________________________________
Ex)
Median: ____________________________________________________________________________________________________________________
Ex)
Mode: ____________________________________________________
Ex)
Range: ____________________________________________________
Ex)
Are there any outliers? Yes or No?
______________________________________________________________________________
______________________________________________________________________________
Which is the best measure of center? Why?
Quiz Scores: 83, 94, 76, 85, 97, 88, 75, 86, 91, 61, 79, 86, 90, 81, 73
Quartile 1:
____________________________________________________________________________________________________________________
Ex)
Quartile 3:
____________________________________________________________________________________________________________________
Ex)
Inter-quartile Range: _________________________________________
Box & Whisker Plot:
5 Number Summary
Dot or Frequency Plot:
Stem and Leaf Plot:
Stem Leaf
Histogram:
• Bars touch one another
• First bar touches y-axis
• x-axis does not have to start at zero
• Intervals by 5’s or 10’s
Favorite Color: Red, Green, Blue, Yellow, Red, Red, Blue, Blue, Green,
Yellow, Yellow, Green, Blue, Blue, Red, Blue, Green, Blue, Green
Bar Graph: ____________________________________________________________________________________________________________________
[pic]Functions on your Calculator [pic]
Quiz Scores: 83, 94, 76, 85, 97, 88, 75, 86, 91, 61, 79, 86, 90, 81, 73
Find the following:
Mean:
Median:
Mode:
Min:
Q1:
Q3:
Max:
To find the above on your calculator, turn on your calculator and clear everything from your screen.
1) Push STAT
2) Push 1: EDIT
3) Clear out any old lists by highlighting the list and pushing CLEAR
4) Type data into list
5) Push STAT again
6) Scroll over to CALC
7) Push 1: 1-Var Stats
8) Type in the list you want by pressing 2nd 1
(or whatever list you want to enter)
9) Press Enter
10) When we find the mean, we always want to round to the nearest tenth.
The following screen should appear on your calculator.
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Symbols:
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Go Back to Page 1 and practice finding the mean, median & mode using your calculator!
Absolute Value: __________________________________________________________
__________________________________________________________
Examples:
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Standard Deviation:
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
Standard Deviation on your Calculator:
• Same steps to find the mean, median, mode
• Symbol for Standard Deviation: σx
• Find Standard Deviation of Quiz Scores above
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x
y
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