Question

The city of San Francisco provides an open data set of commercial building energy use. Each row of the data set represents a commercial building. A sample of 100 buildings from the data set had a mean floor area of 32,470 square feet. Of the sample, were office buildings. a. What is the correct notation for the value 32,470 ? b. What is the correct notation for the value ?

The city of San Francisco provides an open data set of commercial building energy use. Each row of the data set represents a commercial building. A sample of 100 buildings from the data set had a mean floor area of 32,470 square feet. Of the sample, 28%
were office buildings.
a. What is the correct notation for the value 32,470 ?
b. What is the correct notation for the value 28%

Answer 1

a. The correct notation for the value 32,470 is: 32,470

b. The correct notation for the value 28% is: 0.28 or 28/100

How to represent the values in notation

a. Notation for 32,470:

The value 32,470 represents a numerical quantity, specifically the mean floor area of the sample of 100 buildings.

In this context, the notation "32,470" is in standard decimal notation or numeric notation. It is a way to represent the number using digits and a comma to indicate the thousands place.

b. Notation for 28%:

The value 28% represents a percentage, which is a ratio expressed as a fraction of 100.

Here, it indicates the proportion of office buildings within the sample. The notation "28%" is a common way to represent percentages, where the percent symbol "%" signifies "per hundred." It indicates that the value is a ratio out of 100.