| Math
SOL 6.19 ~ Mean,
Mode, Median, and Range
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- Describe
the mean, median, and mode as measures of central tendency.
- Describe the
range.
- Determine their meaning for a set of data.
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| What
is meant by measures of central tendency?
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Measures
of central tendency are types of averages for a data set. They represent
numbers that best describe a data set.
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| What
is the mean and how is it mathematically computed?
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The
mean is the
numerical average of the
data set and is found by adding the numbers in the data set together and
dividing the sum by the number of data pieces in the set.
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| What
is the median and how is it mathematically computed? |
The
median is the
middle point of a data
set in ranked order. If there are an odd number of pieces of data, the
median is the middle piece in ranked order. If there is an even number
of data pieces, the median is the numerical average of the two middle
pieces.
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| What
is the mode and how is it mathematically computed? |
The
mode is the piece of data that
occurs most frequently.
If no value occurs more often than any other does, then there is no
mode.
If there is more than one value that occurs most often, then all these
highest values are modes of the set of data, (e.g. two values that are
equal and highest means we have bimodal data).
There
may be one, more than one, or no mode.
2,
3, 4, 5, 5, 6, 7, 8,
8,
8, 9, 11
The mode is 8.
2,
3, 4, 5,
5,
5, 7,
8,
8,
8, 9, 11 The modes are 5 and
8.
2,
3, 4, 5, 6, 7, 8, 9, 11, 13, 17 There
is no mode.
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| What
is the range of a set of data and how is it mathematically computed?
|
The
range is the difference between the
greatest and least values in a set of data.
This shows the spread in a set of data.
Mean,
Median, Mode and Range Explained
Homework
Hotline ~ Central Tendency
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| What
are the measures of central tendency and how is each different from the
other?
|
Mean,
median, and mode are the measures of central tendency and are useful for
describing the average for different situations.
Mean
works well for sets of data with no very high or low numbers.
Median
is a good choice when data sets have a couple of points much higher
or lower than most of the others.
Mode
is a good descriptor to use when the set of data has many identical
data points.
Which
measure is most useful in this situation?
How
is Central Tendency Used in Real Life?
Teachers
who have Discovery Streaming Could Show:
Example
1: Mean, Mode, and Median -- Babe Ruth (3:45)
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| Links
to Check Out |
Central
Tendencies Review
Central
Tendencies (Sports)
Measures
of Central Tendency Links
Handling
Data ~ Mode, Median, and Mean Train
Race Game - Comparing Median, Mean, and Range
SOL
6.19 ~ Extra Practice
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Resources for Teachers
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Technology
Integration Ideas ~ Strategies
from VDOE
Vocabulary
Sort
TTAC LESSONS from
Enhanced Scope and Sequence
Measures
of Central Tendency
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Mayfield
Teachers ~
Check out the T: Drive for Word Wall Words, Objective Mini Posters,
Released Test Items, and other resources. :) |
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to Mayfield Mathematics |