01a Mean, Median, Mode For the TI 84

CALCULATOR LESSON

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1Mean, Median, Mode, Minimum, Maximum, Range, & Quartiles

Vocabulary

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Minimum : Lowest value in data set (lower

extreme) Shown on Calculator as Min

Maximum: Largest value in data set (Upper

extreme) Shown on Calculator as Max

Vocabulary

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Range: Difference between max & min values

Caution: Min and Max are not the first and last

values! (you have to order the values first!)

Vocabulary

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Quartiles: Divides data into four sets (after

ordering from least to greatest) Q1 – Quartile 1 (Lower quartile) Med – Quartile 2 (Median) Q3 – Quartile 3 (Upper quartile)

InterQuartile Range Middle 50% (falls between Q1 & Q3)

FOR FINDING MEAN, MEDIAN, QUARTILES, RANGE ON

CALCULATOR(TI83/84)

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Tech Manual

Steps

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Enter a list Hit Stat key Choose edit Enter data in list 1 (push enter after

each value)

Steps

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Using the Info Hit Stat Choose Calc Choose 1: 1-Var Push Enter twice

1-Var Stats

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Mean Top number listed

Scroll down for everything else. They are all listed

Do the appropriate math to find the range.

X

Steps to find Mode

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Hit the Stat keyChoose 2: SortA( Hit 2nd, then hit #1

This enters L1 to be sorted

Hit EnterCalculator shows Done

The list has been put in order.

To look at the ordered list: Hit Stat -- Edit Find mode in list by comparing the numbers of each piece

of data.

Clear old data

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Clearing the old data out is important so you can start new lists.

Go to the ListSteps:

Hit the up arrow Hit Clear Hit Enter

Practice #1, 3, 5, 7

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Problem 1 Mean≈18.67 Q1=15 Median=18.

5 Q3=22 Range=12 Mode=none

Problem 3 Mean=8.625 Q1=6 Median=8.5 Q3=10 Range=10 Mode=6 &

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Assignment

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Complete problems not covered in class