After the graduation ceremonies at a university, six graduates were asked whether they were in favor of (identified by 1) or against (identified by 0) abortion. Some information about these graduates is shown below. 
a. How many elements are in the data set?
b. How many variables are in the data set?
c. How many observations are in the data set?
d. Name the scale of measurement for each of the above (Sex, Age, Abortion Issue, Class rank).
e. Which of the above (Sex, Age, Abortion Issue, Class rank) are categorical and which are quantitative variables?
f. Are arithmetic operations appropriate for the variable "abortion issue"?
Definitions:
Margin of Error
A measure of the range of values below and above the sample statistic in a confidence interval; it quantifies uncertainty in estimates.
Standard Error
A measure of the variability or dispersion of a sample statistic from the population parameter.
Confidence Interval
A set of values, obtained from sample data, that probably includes the value of an unspecified population parameter, given a certain confidence level.
Point Estimate
A solitary figure or statistical measure employed to approximate the worth of a population parameter.
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