PAPER # 1
**BBA Business Statistics Exam**
**Duration: 2 hours**
**Instructions:**
1. Answer all questions.
2. Write your answers clearly and legibly.
3. Show all your work and calculations.
4. For multiple-choice questions, circle the letter of the correct answer.
5. Good luck!
**Part A: Multiple Choice Questions (2 points each)**
1. Which of the following is NOT a measure of central tendency?
a) Mean
b) Median
c) Mode
d) Variance
**Answer: d) Variance**
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, 2. If the correlation coefficient between two variables is -0.85, it indicates:
a) A strong positive linear relationship
b) A strong negative linear relationship
c) No linear relationship
d) A weak positive linear relationship
**Answer: b) A strong negative linear relationship**
3. In a normal distribution, approximately what percentage of data falls
within one standard deviation of the mean?
a) 34%
b) 50%
c) 68%
d) 95%
**Answer: c) 68%**
4. What is the formula for calculating the coefficient of variation (CV)?
a) CV = (Standard Deviation / Mean) x 100
b) CV = Mean / Standard Deviation
c) CV = Standard Deviation x Mean
d) CV = Mean - Standard Deviation
**Answer: a) CV = (Standard Deviation / Mean) x 100**
**Part B: Short Answer Questions (5 points each)**
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