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COMM 214 FINAL EXAM PREP | QUESTIONS AND ANSWERS | 2026 UPDATE | 100% CORRECT | WITH COMPLETE SOLUTIONS.

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COMM 214 FINAL EXAM PREP | QUESTIONS AND ANSWERS | 2026 UPDATE | 100% CORRECT | WITH COMPLETE SOLUTIONS.

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COMM 214 FINL EXM PREP |
Course
COMM 214 FINL EXM PREP |

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,
, COMM 214 FINAL EXAM PREP |
QUESTIONS AND ANSWERS | 2026
UPDATE | 100% CORRECT | WITH
COMPLETE SOLUTIONS.



SECTION 1: DESCRIPTIVE STATISTICS (Questions 1-8)




Question 1
A sample of 8 midterm marks: 65, 70, 75, 80, 85, 90, 95, 100. What is the
interquartile range (IQR)?

A) 15
B) 20
C) 25
D) 30

Answer: B) 20

Rationale: To find the IQR, first find Q1 and Q3. Sorted data: 65, 70, 75, 80,
85, 90, 95, 100. Q1 = (70+75)/2 = 72.5, Q3 = (90+95)/2 = 92.5. IQR = 92.5
- 72.5 = 20 . The IQR measures the spread of the middle 50% of the data.

Section: Descriptive Statistics
Source: COMM 214 Final Exam Prep




Question 2
Which measure of central tendency is most affected by outliers?
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