# 29.1. Introduction to Statistics and Data Modeling¶

Read the following articles, and watch the videos.

• Don’t be afraid to explore the links in the article to get a more in depth understanding of the material.

• This is a great video explaining descriptive statistics and visualization, however there are commercials at various points. Just ignore or skip ahead.

• We are looking for a general understanding of the terminology and thinking around inferential statistics.

• This is a great video offering a simplified overview of inferential statistical terms. However there are commercials, ignore and skip ahead.

• An interactive book on probability

• Leads you to the most appropriate graph for your data. It links to the code to build it and lists common caveats you should avoid.

Question

In your own words what is the difference between descriptive and inferential statistics.

Question

Match the following terms with their definitions:

 Mean Measurement of the average distance between each data point and the mean. Mode The middle value when putting data in order Median Sum of values divided by the number of values Standard Deviation The most frequent values in a sample

Question

What is the difference between skewness and kurtosis?

Question

What is meant by a positive correlation between two variables?

Question

Question

Which type of graph is best used to analyze patterns of the relationship between two sets of continuous data?

1. Bubble Chart

2. Scatterplot

3. Grouped Bar Chart

4. Pie Chart

Question

Which type of graph helps you quickly identify relationships between data points? Select all that apply.

1. Heat Map

2. Area Chart

3. Line Chart

4. Bubble Chart

5. Table

Question

What is the difference between population and sample?

Question

What is meant by statistical significance?

Question

What is the difference between a statistic and a parameter?