262 QUANTITATIVE ANALYSIS I Exam

262 QUANTITATIVE ANALYSIS I Exam
Question 1. Which of the following is NOT a measure of central

tendency?


A) Mean


B) Range


C) Median


D) Mode


Answer: B


Explanation: Range is a measure of dispersion, not central tendency.




Question 2. What is the median of the data set: 2, 7, 10, 15, 20?


A) 7


B) 10


C) 12

,262 QUANTITATIVE ANALYSIS I Exam
D) 15


Answer: B


Explanation: Median is the middle value when data is ordered; here, 10

is the middle value.




Question 3. For which type of data is the mode most useful?


A) Nominal


B) Interval


C) Ratio


D) Ordinal


Answer: A


Explanation: Mode is most useful for nominal data where categories are

counted.

,262 QUANTITATIVE ANALYSIS I Exam

Question 4. The mean of 5, 10, 15, and 20 is:


A) 12.5


B) 10


C) 15


D) 20


Answer: A


Explanation: Mean = (5 + 10 + 15 + 20)/4 = 12.5.




Question 5. Which measure of central tendency is not affected by

extreme values?


A) Mean


B) Mode

, 262 QUANTITATIVE ANALYSIS I Exam
C) Median


D) Range


Answer: C


Explanation: Median is resistant to outliers.




Question 6. The difference between the highest and lowest value in a

data set is called:


A) Variance


B) Standard deviation


C) Range


D) Mean


Answer: C


Explanation: Range measures the spread from minimum to maximum.