The members of a family home evening group at BYU-Idaho each recorded the number of hours they spent studying one particular week. Their results are recorded in the following data set. Find the lower quartile (first quartile) of this data set and interpret what it means. {10, 7, 16, 9, 12, 20, 11, 15, 4, 18, 13, 23, 8}
- 12.5; one-fourth of the members studied 9 hours or less.
- 8.5; one-fourth of the members studied 8.5 hours or less.
- 12.5; one-fourth of the members studied 9 hours or more.
- 8.5; one-fourth of the members studied 8.5 hours or more.