In 1998, the University of Wisconsin collected data on means of transportation to work. In 2008, Betsy (a University of Minnesota student) used the data for her own project. Betsy is using which data collection method?

a. Secondary Analysis

Step-by-step explanation:

Secondary Analysis of data is simply analysing data that was collected by someone else.

It is simply carrying out a research with the data that was collected by another person, most times the data has been used for a primary purpose.

Secondary analysis is an empirical exercise which applies the same basic research principles as researches utilizing primary data and has steps to be followed just as any research method.

Betsy is using the Secondary analysis because the data she is making use of has been collected originally by the school and has been used already for a primary purpose or research.

She didn't collect the data herself.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: