Name: _______________________
1.
Date_________________
The three measures of ___________________________________ are ______________, median,
and ____________.
2. The arithmetic _________________ or _________________ can be found by adding every number
in a data set and dividing their sum by the number of numbers.
Try adding these numbers and dividing them by the number of numbers!!!
1, 4, 6, 8, 14, 15 -- the average or mean is _______.
3. The ______________ is the middle number in the data set. If there is an _____________ number of
numbers in the data set, the middle numbers must be ______________ to get the median.
What’s the mode for this data set?
1, 4, 6, 14, 15, 18 -- ____________
4. The _____________ is the number in the data set that occurs or happens the most. If there are no
numbers that repeat in a set, that set has __________________. If a data set has two or more numbers that repeat the most, that set has multiple modes and each number should be listed.
For example, in the set—1, 2, 2, 3, 3, 4—both 2 and 3 would be listed as a
5. There are two measures of _________________________ that you will need to know. They are the
_______________________________ (IQR) and the ________________________________.
6. The IRQ or _____________________________________ is the difference between the upper and
lower quartiles. It can be found by ______________________ the _____________ quartile from the
________________ quartile.
7. Here is how to find the IQR in a set with an ____________________ of values. First, draw a line
through the __________ of the set. Second, find the medians of the numbers above the middle of
the set and below the middle of the set. Those are your ___________ and ___________ quartiles.
Subtract the two medians to find your IQR.
1 2 3 4 5 6
Name: _______________________
Date_________________
8. Here is how to find the IQR in a set with an _____________________ of values. First, draw a line
through the __________ of the set. Second, find the medians of the numbers above the median of
the set and below the median of the set. Those are your ___________ and ___________ quartiles.
Subtract the two medians to find your IQR.
1 2 3 4 5 6 7
9. The Mean Average Deviation (MAD) of a set of data is the ___________________ between each
data value and the mean. It is a measure of _____________________ that indicates how close
together or far apart the values are in a data set.
10. Finding the MAD is a 4 step process. First, find the _______________ for your set of data. Then,
find the _____________ between each number or value and the mean of the whole set. Last,
______________ those distances.
Find the MAD of this set.
1 5 7 8 9 12
1.
2.
What’s the mean?
Make a subtraction prob-
lem for every value using the mean.
3.
List the differ-
ences here.
4.
Average the differences
here to find the MAD!