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AP Statistics
Mr. Swinehart
Room 1.136
[email protected]
Mr. Haeussler
[email protected]
Required Text: Moore, David S. The Practice of Statistics. New York: W.H. Freeman, 2008.
Availability Before school (7:00am), 3rd hour, or after
AP STATS
1.1-1.2
Name: _
Date: _
Hr: _
Please use the data collected on the first day survey for questions 1-7. Use the number of texts
sent in a day.
1) What is the variable of interest?
2) Find the mean and standard deviation for third hour class data.
1.1 Displaying Distributions with Graphs (Intro)
Statistics
Population
Sample
Example A committee on community relations in a college town plans to survey local
businesses about the importance of students as customers. From telephone listings, the
comm
Z~scores _ ' . Name
1)
2)
xv
'3.
;b - - :-.-.-
The college of Physical Education Department offered an Advanced First Aid
Course last semester. The scores on the comprehensive nal exam were normally
distributed, and the z scores for some of the students
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(a) Here is a histogram of the data, with classes 0 S damage < 10, 1 0 S damage < 20, and so
on.
Millions N = 51
Midpoint Count -
5 25
15 6
25 4
35 3
45 5
55 3
65 2
'15 0
85 3
0.0 6.0 12.0
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1.1 Variables: Categorical and Quantitative
Categorical Variable records which of several _ or categories an individual
belongs to.
*Example
Quantitative Variable takes _ values for which it makes sense to do
arithmetic operations like adding and averagin
Describing Distributions with numbers (1.2)
Measuring Center: The Mean
The most common measure of center is the ordinary arithmetic average, or mean.
or
*Example Use survey data from first day. What is the mean for height?
The mean is _ because it is sens