Bimodal
Definition
Bimodal describes a data set that has two distinct modes, or peaks, in its frequency distribution. It indicates the presence of two different values that appear with the highest frequency.
5 Must Know Facts For Your Next Test
- A bimodal distribution will have two modes where each mode represents a local maximum in a frequency distribution.
- In a bimodal distribution, the mean and median might not be effective central tendency measures due to the dual peaks.
- Bimodal distributions can indicate the presence of two different groups within a data set.
- Visual representation of bimodal data typically shows two peaks or humps on a histogram or frequency plot.
- Statistical analysis of bimodal data often involves separating the data into two distinct groups for further study.
Review Questions
- What does it mean if a data set is described as bimodal?
- How would you visually identify a bimodal distribution on a graph?
- Why might the mean and median be less useful in describing a bimodal distribution?
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Related terms
Mean: The average value of a set of numbers, calculated by dividing the sum of all values by the number of values.
Median: The middle value in a list of numbers arranged in ascending or descending order.
Mode: The value that appears most frequently in a data set.
