Deciding which average to use (AQA GCSE Statistics): Flashcards
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When should you use the mode as an average?
When should you use the mode as an average?
Use mode for categorical data or to find the most common value.
What is the median position formula?
What is the median position formula?
Median position = (n + 1) / 2, where n is data count.
Why avoid mean with skewed data?
Why avoid mean with skewed data?
Mean can be distorted by extreme values in skewed data.
How to find the median in 15 values?
How to find the median in 15 values?
Median position = (15 + 1) / 2 = 8th position.
What does the mode tell you in survey data?
What does the mode tell you in survey data?
Mode shows the most common response in the dataset.
When is the median preferred over the mean?
When is the median preferred over the mean?
Use median for data with outliers or skewed distributions.
How to calculate marks needed for target mean?
How to calculate marks needed for target mean?
Marks needed = Required total - Current total.
What average to use for numerical data?
What average to use for numerical data?
Use mean, median, or mode based on data distribution.
What is the best average for extreme values?
What is the best average for extreme values?
Median is best as it is not affected by extremes.
What average is used for further calculations?
What average is used for further calculations?
Mean is essential for calculations like standard deviation.