The first display is unimodal (one peak), symmetric and bell-shaped. This is the prototypi-cal normal curve. The boxplot (laid on its side for this display) shows strong evidence of …

What to Look For in Displays of Numerical Data: • Center • Spread (narrow or wide?) • Shape (modes and symmetry) • Are there outliers (data values that do not follow the overall pattern)? …

I would like to use a graph that shows the absolute number of responses for each numerical value ("8 are 22 years old") instead of the percentage ("24 % are 22 years old"). I think this might …

Symmetric: the distribution appears balanced around the central vertical axis, forming a mirror image. In a single-peaked symmetric distribution, there is one clear peak, the mean, median, …

Why do we visualize data?# Humans can digest figures more easily than raw data. We often want to summarize a dataset (e.g. pie graph) Figures can also highlight differences or variation …

Bar graphs/charts provide a visual presentation of categorical data. Categorical data is a grouping of data into discrete groups, such as months of the year, age group, shoe sizes, and animals. …

All three distributions in Explorations 1 and 2 are roughly symmetric. The histograms are called “bell-shaped.” a. What are the characteristics of a symmetric distribution? b. Why is a …

It’s easy to see some of the advantages of graphically presenting data. For example, here you can clearly see that the data are centred around a value in the low 30’s and fall away on either …

EXAMPLE 1 Choosing an Appropriate Data Display Choose an appropriate data display for the situation. Explain your reasoning. a. the number of students in a marching band each year A …

2.1.2 Quantitative or numerical data. Items are measured in some way based on some quantitative property. This produces a one, or more, numbers. Examples: Time, in hours; …