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4 cards from this section. Quick, good the night before a test.
What is the formula for finding the median of grouped data?
Think of the variables: l for lower limit, cf for cumulative frequency.
In a frequency distribution, how do you calculate cumulative frequency?
Start from the first frequency and keep adding.
What is the key requirement to identify the median class?
Think about halves of data.
True or False: The median is impacted heavily by extreme values.
Consider the definition of median and how it handles data.
Given a dataset with the following frequency distribution for weights: 40-50 (10), 50-60 (12), 60-70 (15), 70-80 (10). Calculate the median weight.
Identify the cumulative frequency before applying the formula.
Calculate the median of grouped data given by class intervals: 0-10 (3), 10-20 (7), 20-30 (15), 30-40 (5). Determine the median and discuss its significance.
Focus on cumulative frequency for accurate median class identification.
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