The Data Analyst Toolkit

Descriptive or summary statistics are used to describe or summarize a dataset.

What is the most typical measure of central tendency.

The mean is the standard measure of dispersion.

Common measures of dispersion are variance, standard deviation and interquartile range

The measurement of the spread of a dataset relative to its mean is called _________

Data can have different shapes

A skewed distribution is a symmetric distribution.

A __________ is used to describe how _________ variables are related.

Inferential statistics is another term for descriptive statistics

Hypothesis testing and statistical significance are the same

The p-value has no limitations at all. It is the only standard by which we can make definitive conclusions

In order to establish significance, we use ____________.

A pre and post-test is an example of a _________ sample.

Student t-test and independent t-test are used interchangeably.

A regression is looking at the relationship between dependent and independent variables.

A linear regression uses the equation of the straight line to describe the relationship between variables and make predictions