Final answer:
To convert decimal to percentage in a cell, use the Format function. The percentage of high school seniors planning to attend college from a survey is a Statistic, not a Parameter.
Step-by-step explanation:
To change the appearance of data in a cell from decimal to percentage, you would use the Format function. This function allows you to modify the way data is displayed in a spreadsheet without altering the actual cell value. For example, if a cell contains the decimal 0.85, applying the percentage format will display it as 85%.
Regarding the second part of the question, when the U.S. federal government conducts a survey of high school seniors and finds that fifty percent are planning to attend a four-year college or university the following year, that fifty percent is an example of a Statistic. A statistic is a measure that describes a sample, whereas a parameter describes an entire population. In this case, the survey results are from a sample of the high school senior population.