Data Science Review

Front

What is the first step after opening Pyret?

Back

Press 'run', type animals-table, and press 'enter'.

Front

What does count(animals-table, 'species') show?

Back

This table shows how many of each species are in the animals table.

Front

What does pie-chart(animals-table, 'weeks') display?

Back

This graph shows the percentage of animals that were adopted at each number of weeks.

Front

What does histogram(animals-table, 'species', 'weeks', 2) illustrate?

Back

This graph shows when the animals were adopted according to weeks with a bin size of 2.

Front

What information does bar-chart(animals-table, 'sex') provide?

Back

This graph shows the sexes of the animals in the animals table.

Front

Define 'data visualization'.

Back

The graphical representation of information and data to communicate insights clearly.

Front

What is a 'contract' in programming?

Back

A contract specifies the expected input and output of a function.

Front

Explain the purpose of a 'histogram'.

Back

A histogram is used to represent the distribution of numerical data by showing the number of data points that fall within specified ranges.

Front

What is the difference between a 'bar chart' and a 'pie chart'?

Back

A bar chart displays data with rectangular bars representing different categories, while a pie chart shows proportions of a whole as slices of a circle.

Front

What does the term 'bin size' refer to in data analysis?

Back

Bin size refers to the range of values that are grouped together in a histogram.