Shower Data Chart InstructionsChapter 11
This chart is the record that an AP class kept for how long their showers were each day for a week. The numbers on the chart are how many minutes each person used a shower. The M and F are male and female.
Instructions for the right hand side of the chart.
The first person on the chart is a male. Add the numbers horizontally to get the number of minutes that person used to take showers for the week.
The Henry County Water Authority says that the average shower uses 2.5 gallons of water per minute, so multiply the total minute’s column by 2.5 to get the number of gallons of water used by each person during the week.
Then divide Total Gallons by 7 to get the Avg Gal/day that each person used.
Repeat for each of the people in the chart.
That should finish the right side of the work sheet.
Instructions for the bottom of the chart.
At the bottom of the sheet we are looking at how much water is used by the class during each day.
Add all of the minutes used on the 13th by everybody in the classand put it in the Total Min. column. Repeat for each of the 7 days.
Then multiply each total by 2.5 to get the total gallons of water used by everybody on that day. Repeat for each day.
Divide the Total Gal by the total number of people (22) in the class to get the average number of gallons used by the class on the 13th, repeat for each day.
Add up the number of minutes on the 13th used by males and multiply that by 2.5 to get the number of gallons of water used by males on the 13th, repeat for each day. Count the “U” as a male.
Do the same for females,
Divide each total for males by the number of males(11) in the class to bet Male average gallons used per day.
Divide each total for females by the number of females(11) in the class to get Female average gallons used per day.