Solution

The  are the individuals on whom an experiment is performed.

\textbf{experimental units}

The \textbf{variables} are the topics that were investigated.

\textbf{Categorical/qualitative} variables places the individuals into a category, while a \textbf{quantitative}quantitative variable is a numerical variable.



SOLUTION

(a) In this case, a group of 25 pairs of jeans is randomly selected and thus the experimental units are the 25 pairs of jeans, which implies that a single experimental unit is a pair of jeans.


(b) We are interested in the state in which the pair of jeans is produced, which implies that the variable being measured is the state.

The variable "state" is qualitative, because the different possible categories are the different states (which are also not numerical values).





(d) \textbf{Bar chart}

The width of each bar has to be the same and the height has to be equal to the frequency.










(g) The plant that produced more jeans that the others is the state in the pie chart of part (c) with the largest slice and is the state in the bar graph of part (d) that contains the highest bar.


Answer

(a) A pair of jeans

(b) State, qualitative

(c) The frequency is the number of times the state occurs in the given data set.

The percent is the frequency divided by the total frequency.

The slice size (central angle of the circle) is the product of 360
\text{\textdegree}

Draw a circle.

Draw the slices for each category using the determined slice sizes.

(d) The width of each bar has to be the same and the height has to be equal to the frequency.

(e) 0.32

(f) California (CA)

(g) Largest slice in the pie chart of largest bar in the bar chart represents the plant that produced more jeans than the others.


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