DMK 40173 TOPIC 3 Descriptive Data and Data Presentation

Front

What is the frequency of a particular data value?

Back

The frequency of a particular data value is the number of times the data value occurs.

Front

How is a frequency table constructed?

Back

A frequency table is constructed by arranging collected data values in ascending order of magnitude with their corresponding frequencies.

Front

What is a cumulative frequency table?

Back

A cumulative frequency table is created when data values are grouped into class intervals due to the spread of data.

Front

What is the formula to find the class interval (k)?

Back

k = log(n) / log(2), where n is the number of data.

Front

What is the formula to find the class size (s)?

Back

s = (max data - min data) / k.

Front

What is a histogram?

Back

A histogram is a graphical display of data using bars of different heights, similar to a bar chart but groups numbers into ranges.

Front

What are the properties of a histogram?

Back

Histograms display quantitative data and have no gaps between bars.

Front

What is a frequency polygon?

Back

A frequency polygon is constructed by connecting the midpoints of each histogram bar.

Front

What is a bar chart?

Back

A bar chart uses rectangles (or bars) to represent quantities of categorical variables and can be displayed in various orientations.

Front

What are the types of bar charts?

Back

Simple bar chart, multiple/cluster bar chart, and stacked/component bar chart.