Question 1
When examining distributions of numerical data, what three components should you look for?
◦ Shape, center, and spread
◦ Symmetry, center, and spread
◦ Shape, symmetry, and spread
◦ Symmetry, skewness, and spread
Question 2
The two histograms below display the exact same data. How do the plots differ?
◦ Histograms (i) and (ii) do not display the same data because the values listed on the y-axis do not match.
◦ Histogram (i) uses relative frequencies to show the proportion of observations at a given value. Histogram (ii) uses frequencies to simply count the number of observations at a given value.
◦ Histograms (i) and (ii) are exactly the same; there are no differences between the plots.
◦ Histogram (i) uses frequencies to simply count the number of observations at a given value. Histogram (ii) uses relative frequencies to show the proportion of observations at a given value.
Recognizing data clusters
Model of a longitudinal study in which 983 students were surveyed in 1984 and then again in 1985, 19
Data for Calculating Productivity Growth in Erewhon
Data management questions
Histograms
Linkage Data from 39 Families with Cystic Fibrosis