Question

11 a teacher compares students grades on a test with how long students reported they studied for the test and puts together this scatter plot with the data. which is the best conclusion based upon this data? a studying longer tended to yield better test scores. b only students who studied at least 1 hour passed the test. c generally, studying about 1.5 hours produces the best results. d it was not necessary to study to reach a passing score. 12 which of the following is a basic safety rule to follow in a science lab? a always wear safety goggles. b eat and drink in the lab. c ignore spills and accidents. d touch all chemicals to identify them.

Explanation:

Question 11

To determine the best conclusion from the scatter plot (relating hours studying to test scores: pass/fail), we analyze each option:

• Option A: The trend in the scatter plot (with "Pass" scores generally at higher study hours and "Fail" at lower) suggests that longer study time is associated with better (passing) scores. This aligns with the data.
• Option B: The plot likely has some students who studied less than 1 hour and passed (or vice versa), so "only" is incorrect.
• Option C: The plot doesn’t show 1.5 hours as the “best” (no clear peak at 1.5), so this is unfounded.
• Option D: The plot shows that studying (even less than 1.5 hours) is necessary for many to pass, so this is incorrect.

We evaluate lab safety rules:

• Option A: Wearing safety goggles is a fundamental lab safety rule to protect eyes from chemicals, spills, etc.
• Option B: Eating/drinking in labs is prohibited (contamination, safety hazards), so this is not a safety rule.
• Option C: Ignoring spills/accidents is unsafe (they must be cleaned/reported), so this is not a rule.
• Option D: Touching all chemicals is dangerous (unknown reactivity, toxicity), so this is not a rule.

Answer:

A. Studying longer tended to yield better test scores.

Question 12