Sarah's Study and Sleep Impact

The video explores whether Sarah performs better on tests by studying or sleeping more. It analyzes her test scores using statistical measures like mean, median, mode, range, and mid-range. The analysis suggests higher scores when she sleeps more, but the data is inconclusive due to potential biases and the small sample size.

What was the main question Sarah wanted to answer with her experiment?

• Whether studying more hours improves test scores.

• Whether sleeping more hours improves test scores.

• Whether studying or sleeping more improves test scores.

• Whether eating a healthy breakfast improves test scores.

How many tests did Sarah use to gather her data?

• 5 tests

• 20 tests

• 15 tests

• 10 tests

What was Sarah's mean test score when she studied two more hours?

• 82.5

• 87.2

• 79.0

• 80.8

What was the mean test score when Sarah slept two more hours?

• 87.2

• 82.5

• 80.8

• 79.0

What was the median test score when Sarah studied two more hours?

• 79

• 86

• 82.5

• 80.8

What was the median test score when Sarah slept two more hours?

• 82.5

• 80.8

• 86

• 79

What was the range of test scores when Sarah studied more?

• 19

• 25

• 21

• 14

What was the range of test scores when Sarah slept more?

• 21

• 14

• 19

• 25

What is the mid-range score when Sarah studied more?

• 82.5

• 88

• 86

• 80.8

What conclusion can be drawn from Sarah's experiment?

• Neither studying nor sleeping more affects scores.

• Sleeping more might lead to better scores, but it's not conclusive.

• Sleeping more always leads to better scores.

• Studying more always leads to better scores.