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A variable that can take on any numerical value within a range is classified as:

In an example from a research study on cholesterol levels, what does the use of a new drug compared to a standard drug illustrate about experimental studies?

What characteristic allows numbers to be particularly useful in statistical analysis?

An interval scale is different from a ratio scale because:

In statistical analysis, what is referred to by the term “statistic”?

What purpose do scales serve in statistical analysis?

Which command would you use to get help for the `mean` function in R?

The speed of a file transfer from a server on campus to a personal computer at a student’s home on a weekday evening is normally distributed with a mean of 63 kilobits per second and a standard deviation of four kilobits per second.   What is the probability that the file will transfer at a speed of 70 kilobits per second or more?

What will `rep(1:3, 2)` return?

In what scenario is the median particularly informative as a measure of central tendency?