Multiple choice:

A researcher suspects that having publicly funded preschool in a district increases 3"\" grade math and reading proficiency. The researcher randomly selected 100 school districts in the state of California. For each school district, the researcher records: Whether or not the district had publicly funded preschool in the years 2000-2002 The percentage of 8'\" grade students in the district who were proficient in math in the year 2011 \"the percentage of 8"\" grade students in the district who were proficient in reading in the year 2011 Note: 2011 was selected because students in 8'\" grade during 2011 would most likely have been in preschool during the years 2000-2002. We data showed that, on average, schools districts with publicly funded preschool had signicantly higher rates of math and reading prociency. numerical This is not a variable categorical