EXAM 1 REVIEW
CHAPTER 1
1. Know the context of the DATA (5 Ws): who, what, when, where, why
2. Variable Types (categorical = ordinal or nominal, quantitative = discrete or
continuous)
3. Time Series vs. Cross Sectional
4. Source of data & reasons for coll
Level
None
AA
BA
MBA
PhD
Frequency
157
40
218
53
33
501
31.34%
7.98%
43.51%
10.58%
6.59%
100.00%
50.00%
45.00%
40.00%
35.00%
30.00%
25.00%
Column D
20.00%
15.00%
10.00%
5.00%
0.00%
None
None
< 1 year
1-5 years
> 5 years
12
42
117
171
32.33%
AA
BA
AA
MBA
B
Problem
Exam 1
1)
Anna
Megan
std. Dev
Mean
Exam 2
82
92
11
65
Anna Zscore 1st
Anna Zscore 2nd
Annas Total Score
1.5
-0.2
1.4
Megan Zscore 1st
Megan Zscore 2nd
Megan Total Score
2.5
-1.8
0.6
2)
Standard Deviations below
82
72
6
83
164
164
(cause is a neg.
1. Which of the following about the binomial distribution is Not a true statement?
A The random variable is continuous.
Problem A
Suppose we know that the length of time it takes a college student to find a parking spot
in the library parking lot follows
1. A survey of investors finds that 60% use a full service breakage firm to invest in stock, 30% trade
stocks online and 24% do both. The probability that an investor elected at random uses a full
service breakage firm to trades stocks online is
A. 90%
B.
Midterm Exam #2
Name_
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
To determine whether the cash bonus paid by a company is related to annual pay, data were gathered for 10 loan
officers at AMC Bank wh