Online Topic Test Copy 1 Hannah finds that the amount of time she spends studying for her history tests affects her grade on the test. Which statement describes the
relationship Hannah is observing?
A Both the time she spends studying and her grade on the test are dependent variables.
B
The time she spends studying is an independent variable, but her grade on the test is a dependent variable.
C. Both the time she spends studying and her grade on the test are independent variables.
O
D. The time she spends studying is a dependent variable, but her grade on the test is an independent variable.

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.