Unit 5 Practice MidtermRevisedJuly2015
MM305 Practice Midterm Exam
Unit 1: Basic Statistics Review
1. Outliers defined as being between 1.5*IQR and 3*IQR to the left of Q1 or to the right of Q3 are considered ________.
A) weak
B) extreme
C) mild
D) statistically significant
2. What does a negative correlation coefficient indicate?
A) When one variable increases, the other variable decreases.
B) There is a nonlinear relationship between the two variables.
C) When one variable increases, the other variable increases by a smaller proportion. D) A change in one variable does not lead to a change in the other variable.
3. When a histogram is positively skewed, it ________.
A) tails off to the right
B) is symmetrical
C) tails off to the left
D) has a slope greater than one
Unit 2: Probability Concepts and Applications
4. Subjective probability assessments depend on
A) the total number of trials.
B) the relative frequency of occurrence.
C) the number of occurrences of the event.
D) experience and judgment.
5. Bayes' theorem is used to calculate
A) revised probabilities.
B) prior probabilities.
C) subjective probabilities.
D) marginal probabilities.
6. Suppose that 10 golfers enter a tournament and that their respective skill levels are approximately the same. What is the probability that one of the first three golfers that registered for the tournament will win?
A) 0.100
B) 0.001
C) 0.300
D) 0.700
1
MM305 Practice Midterm Exam
7. A market research study is being conducted to determine if a product modification will be well received by the public. A total of 1,000 consumers are questioned regarding this product.
The table below provides information regarding this sample.
Male
Female
Positive
Reaction
200
360
Neutral Negative
Reaction Reaction
60
140
120
120
What is the probability that a randomly selected person would be a female who had a positive reaction?
A) 0.120
B) 0.200
C) 0.360
D) 0.560
Unit 3: Sampling and Estimation
8. Sampling from a continuous process ________.
A) does not involve a
Unit 1: Basic Statistics Review
1. Outliers defined as being between 1.5*IQR and 3*IQR to the left of Q1 or to the right of Q3 are considered ________.
A) weak
B) extreme
C) mild
D) statistically significant
2. What does a negative correlation coefficient indicate?
A) When one variable increases, the other variable decreases.
B) There is a nonlinear relationship between the two variables.
C) When one variable increases, the other variable increases by a smaller proportion. D) A change in one variable does not lead to a change in the other variable.
3. When a histogram is positively skewed, it ________.
A) tails off to the right
B) is symmetrical
C) tails off to the left
D) has a slope greater than one
Unit 2: Probability Concepts and Applications
4. Subjective probability assessments depend on
A) the total number of trials.
B) the relative frequency of occurrence.
C) the number of occurrences of the event.
D) experience and judgment.
5. Bayes' theorem is used to calculate
A) revised probabilities.
B) prior probabilities.
C) subjective probabilities.
D) marginal probabilities.
6. Suppose that 10 golfers enter a tournament and that their respective skill levels are approximately the same. What is the probability that one of the first three golfers that registered for the tournament will win?
A) 0.100
B) 0.001
C) 0.300
D) 0.700
1
MM305 Practice Midterm Exam
7. A market research study is being conducted to determine if a product modification will be well received by the public. A total of 1,000 consumers are questioned regarding this product.
The table below provides information regarding this sample.
Male
Female
Positive
Reaction
200
360
Neutral Negative
Reaction Reaction
60
140
120
120
What is the probability that a randomly selected person would be a female who had a positive reaction?
A) 0.120
B) 0.200
C) 0.360
D) 0.560
Unit 3: Sampling and Estimation
8. Sampling from a continuous process ________.
A) does not involve a