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Questions and Answers
Which measure of central tendency is the most commonly used?
Which measure of central tendency is the most commonly used?
- Geometric mean
- Arithmetic mean (correct)
- Median
- Mode
How is the arithmetic mean calculated?
How is the arithmetic mean calculated?
- By taking the square root of the observations
- By finding the middle value
- By summing all the observations (correct)
- By finding the most common value
What does the arithmetic mean represent?
What does the arithmetic mean represent?
- The value that occurs least frequently
- The average value of all observations (correct)
- The value in the middle of the distribution
- The value that occurs most frequently
What are the other four measures of central tendency mentioned in the text?
What are the other four measures of central tendency mentioned in the text?
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What are the merits of using the arithmetic mean?
What are the merits of using the arithmetic mean?
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Study Notes
Measures of Central Tendency
- The arithmetic mean is the most commonly used measure of central tendency.
Calculating Arithmetic Mean
- The arithmetic mean is calculated by summing all the values in a dataset and dividing the result by the total number of values.
Representation of Arithmetic Mean
- The arithmetic mean represents the average value of a dataset, providing a snapshot of the central value of the data.
Other Measures of Central Tendency
- The other four measures of central tendency mentioned are the median, mode, geometric mean, and harmonic mean.
Merits of Arithmetic Mean
- The arithmetic mean is sensitive to extreme values in the data, making it a good measure for datasets without outliers.
- The arithmetic mean is easy to calculate and understand, making it a widely used measure.
- The arithmetic mean is useful for making predictions and estimating future values.
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