- 1
Finding 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*…. - 2
The

*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… - 3
While 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…

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In this lesson, you learned how to calculate the average of a dataset using the formula: […] and the NumPy function: […] — Circling back to the original question, do you feel like the…

- 1
In this lesson, you will learn how to find the

*median*of a dataset — a common measure of a dataset’s center. Each of the next three exercises will cover the following topics: - Manually fin… - 2
The formal definition for the median of a dataset is: *The value that, assuming the dataset is ordered from smallest to largest, falls in the middle. If there are an even number of values in a dat…

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Finding the median of a dataset becomes increasingly time-consuming as the size of your dataset increases — imagine finding the median of an unsorted dataset with 10,000 observations. The Nu…

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In this lesson, you learned how to find the median of a dataset in two steps: 1. Sort the dataset 2. Identify the one or two numbers that fall in the middle of the sorted dataset You also learned …

- 1
In this lesson, you will learn how to find the

*mode*of a dataset. Each of the next three exercises will cover the following: - Manually finding the mode of a dataset - Using Python’s SciPy librar… - 2
The formal definition for the mode of a dataset is: *The most frequently occurring observation in the dataset. A dataset can have multiple modes if there is more than one value with the same maxim…

- 3
Finding the mode of a dataset becomes increasingly time-consuming as the size of your dataset increases — imagine finding the mode of a dataset with 10,000 observations. The SciPy […] fu…

- 4
In this lesson, you learned how to find the mode of a dataset in two steps: 1. Find the frequency of every unique number in the dataset 2. Determine which number has the highest frequency You also…

## What you'll create

Portfolio projects that showcase your new skills

## How you'll master it

Stress-test your knowledge with quizzes that help commit syntax to memory