Lecture 9; Sample Size determination/Calculation

       Sample Size Calculation:

• Depends on population size, variability, and research design.
• Formula for simple random sampling:

where:

• (n): Sample size
• (Z): Z-score for desired confidence level
• (p): Estimated proportion
• (E): Margin of error¹.
• Online sample size calculator. Check it Here!

Remember that selecting an appropriate sampling method and size is crucial for valid research

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