Classify each of the following as nominal, ordinal, interval or ratio level data.
The time required to produce each tire on an assembly line
b. The number of quarts of milk a family drinks in a month
c. The ranking of four machines in your plant after they have been designated as excellent, good, satisfactory or poor
d. The age of your employees
e. An employee’s ID number
f. The ranking of a company by Fortune 500
g. Per capital income
h. Profit loss in dollar
For the following data, construct a frequency distribution with six classes. Construct the class midpoint, the cumulative frequency and the relative frequency.
Determine the mode and median and compute the mean for the following numbers.