Mean, Median, and Mode
Learn to use Python packages or manually calculate the mean, median, and mode of real-world datasets.
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Key Concepts
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Mean of a Dataset
Mean of a Dataset
The mean, or average, of a dataset is calculated by adding all the values in the dataset and then dividing by the number of values in the set.
For example, for the dataset [1,2,3], the mean is 1+2+3 / 3 = 2.
Mean
Lesson 1 of 3
- 1Finding the center of a dataset is one of the most common ways to summarize statistical findings. Often, people communicate the center of data using words like, on average, usually, or often….
- 2The mean, often referred to as the average, is a way to measure the center of a dataset. The average of a set is calculated using a two-step process: 1. Add all of the observations in your da…
- 3While you’ve shown that you can calculate the average yourself, it becomes time-consuming as the size of your dataset increases — imagine adding all of the numbers in a dataset with 10,000 ob…
- 4In this lesson, you learned how to calculate the average of a dataset using the formula: \bar{x} = \frac{x_1 + x_2 … + x_{n}}{n} and the NumPy function: np.average(my_array) — Circling back…
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