BSA 113i – Business Statistics Practice
Examination Questions With Correct
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Rationales 2026 Q&A | Instant
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1. What is the main purpose of statistics?
A. To collect only raw data
B. To ignore data variation
C. To collect, organize, analyze, and interpret data
D. To guess outcomes randomly
Rationale: Statistics is used to make sense of data by organizing and
analyzing it to support decision-making rather than guessing or
ignoring variation.
2. Which of the following is a type of descriptive statistics?
A. Hypothesis testing
B. Regression analysis
C. Measures of central tendency
D. Probability testing
Rationale: Descriptive statistics summarize data using measures like
mean, median, and mode.
,3. The mean is defined as:
A. Middle value
B. Most frequent value
C. Sum of values divided by number of observations
D. Difference between highest and lowest value
Rationale: The mean is calculated by dividing the total sum of data
values by the number of observations.
4. The median is:
A. Average of all values
B. Most common value
C. Middle value when data is arranged in order
D. Sum of all values
Rationale: The median represents the center of an ordered dataset.
5. The mode is:
A. Middle value
B. Least frequent value
C. Most frequently occurring value
D. Average value
Rationale: Mode identifies the value that appears most often in a
dataset.
,6. Which scale of measurement has no true zero?
A. Ratio scale
B. Ordinal scale
C. Nominal scale
D. Interval scale
Rationale: Interval scales (like temperature in Celsius) do not have a
true zero point.
7. Which of the following is a qualitative variable?
A. Height
B. Weight
C. Age
D. Gender
Rationale: Qualitative variables describe categories rather than
numerical values.
8. A population refers to:
A. A sample group
B. Entire set of individuals or items of interest
C. Random selection only
D. Small subset of data
Rationale: A population includes all members of a defined group being
studied.
, 9. A sample is:
A. Entire population
B. Subset of the population
C. Random guess
D. A constant value
Rationale: A sample is a portion of the population used for analysis.
10. Which graph is best for categorical data?
A. Histogram
B. Line graph
C. Bar chart
D. Frequency polygon
Rationale: Bar charts are used to represent categorical variables
clearly.
11. Probability ranges between:
A. -1 and 1
B. 0 and 2
C. 0 and 1
D. 1 and 100
Rationale: Probability values always lie between 0 (impossible) and 1
(certain).
12. The sum of all probabilities in a sample space equals:
Examination Questions With Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the main purpose of statistics?
A. To collect only raw data
B. To ignore data variation
C. To collect, organize, analyze, and interpret data
D. To guess outcomes randomly
Rationale: Statistics is used to make sense of data by organizing and
analyzing it to support decision-making rather than guessing or
ignoring variation.
2. Which of the following is a type of descriptive statistics?
A. Hypothesis testing
B. Regression analysis
C. Measures of central tendency
D. Probability testing
Rationale: Descriptive statistics summarize data using measures like
mean, median, and mode.
,3. The mean is defined as:
A. Middle value
B. Most frequent value
C. Sum of values divided by number of observations
D. Difference between highest and lowest value
Rationale: The mean is calculated by dividing the total sum of data
values by the number of observations.
4. The median is:
A. Average of all values
B. Most common value
C. Middle value when data is arranged in order
D. Sum of all values
Rationale: The median represents the center of an ordered dataset.
5. The mode is:
A. Middle value
B. Least frequent value
C. Most frequently occurring value
D. Average value
Rationale: Mode identifies the value that appears most often in a
dataset.
,6. Which scale of measurement has no true zero?
A. Ratio scale
B. Ordinal scale
C. Nominal scale
D. Interval scale
Rationale: Interval scales (like temperature in Celsius) do not have a
true zero point.
7. Which of the following is a qualitative variable?
A. Height
B. Weight
C. Age
D. Gender
Rationale: Qualitative variables describe categories rather than
numerical values.
8. A population refers to:
A. A sample group
B. Entire set of individuals or items of interest
C. Random selection only
D. Small subset of data
Rationale: A population includes all members of a defined group being
studied.
, 9. A sample is:
A. Entire population
B. Subset of the population
C. Random guess
D. A constant value
Rationale: A sample is a portion of the population used for analysis.
10. Which graph is best for categorical data?
A. Histogram
B. Line graph
C. Bar chart
D. Frequency polygon
Rationale: Bar charts are used to represent categorical variables
clearly.
11. Probability ranges between:
A. -1 and 1
B. 0 and 2
C. 0 and 1
D. 1 and 100
Rationale: Probability values always lie between 0 (impossible) and 1
(certain).
12. The sum of all probabilities in a sample space equals:
