COB 241 FINAL TEST 2026 QUESTIONS WITH CORRECT ANSWERS GRADED A+

COB 241 FINAL TEST 2026 QUESTIONS
WITH CORRECT ANSWERS GRADED A+

>> Descriptive Statistics
Answer: Summarize data


>> Mean
Answer: Arithmetic average


>> Median
Answer: Middle value


>> Mode
Answer: Most frequent value


>> Range
Answer: Max − min


>> Variance
Answer: Average squared deviation


>> Standard Deviation
Answer: Square root of variance


>> Quartile
Answer: Divides data into four parts

, >> Interquartile Range (IQR)
Answer: Q3 − Q1


>> Skewness
Answer: Asymmetry of distribution


>> Kurtosis
Answer: Tailedness of distribution


>> Histogram
Answer: Frequency distribution


>> Box Plot
Answer: Shows quartiles, outliers


>> Outlier
Answer: Data point significantly different


>> Normal Distribution
Answer: Bell-shaped curve


>> Central Limit Theorem
Answer: Sample means approximately normal


>> Confidence Interval
Answer: Range likely to contain population parameter


>> Hypothesis Testing
Answer: Statistical test of claim