Measure of Center
The "average" of a set of data
Mean
What is the median of the lower half of the data?
The lower quartile
Can this situation yield variable data? / is it a statistical question?
You want to know how old your friend's mom is.
no / not variable
What type of graph is a histogram?
Bar graph
Find the Mean.
2, 4, 5, 6, 2, 3, 1, 1
3
in order from least to greatest
____ is a display that shows how the values in a data set are distributed or spread out.
A box plot
Can this situation yield variable data? / Is this a statistical question?
How many people normally attend Rays games.
yes / variable
Histograms represent
a) simple data values
b) frequencies of numeric data in intervals
b
Find the median.
5, 7, 10, 3, 6, 7, 2
6
Explain how to find the mean of a data set
Add the data values and divide by the number of the data values
What values are used as the endpoints of a box plot?
The least and greatest values
What are data values that are either much greater or much less than the other data values?
Outliers
Histograms and dot plots are the same.
False
Find the range.
4, 10, 17, 22, 30
26
Find the median:
1, 4, 6, 8, 10, 17
7
Find the range:
2, 4, 7, 8, 10, 12, 25
23
Find the outlier.
20, 23, 27, 22, 9, 25, 23
9
Find the mode.
2, 8, 4, 2, 7, 4, 9, 10, 4, 16
4
Find the mean:
1, 3, 5, 7, 2, 6
4
If the lower quartile is 10 and the upper quartile is 22, what is the IQR (interquartile range)?
12
In a dot plot, each value is represented by a...
dot
Find the mean.
1, 3, 2, 1, 3
2