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.
2006 Data:Top 25 Substances Involved in Human Exposures
Display Used by Murray, Boyaci, and Kersten (2006)
Demographic Data for India
data
Threat Display: Male Collared Lizard