BAN 280 Midterm Exam Questions &
Answers 2024/2025
A summary measure computed from a population is referred to as a - ANSWERSParameter
An example of a sample statistic is - ANSWERSBoth the sample mean, X bar , and the sample standard
deviation, sx
What is the difference between a qualitative variable and a quantative variable? - ANSWERSQuantitative
variables always take on values that are numeric while qualitative variables take on values that represent
some characteristic or category.
The variance can never be - ANSWERSNegative
Which of the following provides a measure of central location for the data? - ANSWERSMean
The population mean, µ, is a measure of - ANSWERScentral tendency of a population
The mean of a random variable will be negative if all possible values of the random variable are negative.
- ANSWERSTrue
The population median is - ANSWERScomputed from a census of the entire population
The range of probability is - ANSWERSzero to one
In an experiment, events A and B are mutually exclusive. If P(A) = 0.6, then the probability of B -
ANSWERScan not be larger than 0.4
Which of the following statements is(are) always true? - ANSWERSP(A) = 1 - P(Ac)
, If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P (A intersection B) = -
ANSWERS0.12
If the mean of a normal distribution is negative, - ANSWERSNone of these alternatives is correct.
A normal probability distribution - ANSWERSis a continuous probability distribution
For any continuous random variable, the probability that the random variable takes on exactly a specific
value is - ANSWERSalmost zero
Consider the following frequency distribution:
Classes Absolute Frequency
0 but < 10 5
10 but < 20 12
20 but < 30 15
30 but < 40 28
40 but < 50 20
50 but < 60 8
60 but < 100 12
What would be the relative frequency density for the "60 but < 100" class? - ANSWERS.03
Consider the following SAMPLE data set:
X
26
Answers 2024/2025
A summary measure computed from a population is referred to as a - ANSWERSParameter
An example of a sample statistic is - ANSWERSBoth the sample mean, X bar , and the sample standard
deviation, sx
What is the difference between a qualitative variable and a quantative variable? - ANSWERSQuantitative
variables always take on values that are numeric while qualitative variables take on values that represent
some characteristic or category.
The variance can never be - ANSWERSNegative
Which of the following provides a measure of central location for the data? - ANSWERSMean
The population mean, µ, is a measure of - ANSWERScentral tendency of a population
The mean of a random variable will be negative if all possible values of the random variable are negative.
- ANSWERSTrue
The population median is - ANSWERScomputed from a census of the entire population
The range of probability is - ANSWERSzero to one
In an experiment, events A and B are mutually exclusive. If P(A) = 0.6, then the probability of B -
ANSWERScan not be larger than 0.4
Which of the following statements is(are) always true? - ANSWERSP(A) = 1 - P(Ac)
, If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P (A intersection B) = -
ANSWERS0.12
If the mean of a normal distribution is negative, - ANSWERSNone of these alternatives is correct.
A normal probability distribution - ANSWERSis a continuous probability distribution
For any continuous random variable, the probability that the random variable takes on exactly a specific
value is - ANSWERSalmost zero
Consider the following frequency distribution:
Classes Absolute Frequency
0 but < 10 5
10 but < 20 12
20 but < 30 15
30 but < 40 28
40 but < 50 20
50 but < 60 8
60 but < 100 12
What would be the relative frequency density for the "60 but < 100" class? - ANSWERS.03
Consider the following SAMPLE data set:
X
26
