12/8/25, 8:01 AM Benchmark 3: Checkpoints 1-2: Attempt review
Introduction to Statistics / Benchmark 3: Checkpoints 1-2 / Benchmark 3: Checkpoints 1-2
Started on Sunday, November 9, 2025, 6:21 PM
State Finished
Completed on Sunday, November 9, 2025, 6:42 PM
Time taken 20 mins 52 secs
Grade 120.00 out of 125.00 (96%)
Question 1
Correct
n
5.00 points out
of 5.00
Select one:
, 12/8/25, 8:01 AM Benchmark 3: Checkpoints 1-2: Attempt review
Question 2 A marketing firm wants to know customer opinions about a new product. They decide
Correct to interview people who are shopping at a mall where the product is sold. Which type
5.00 points out of sampling is being used, and what is a potential issue with this sampling method?
of 5.00
Select one:
a. Stratified sampling; the strata may be improperly defined.
b. Cluster sampling; it may not represent the entire population.
c. Simple random sampling; the sample may be too small.
d. Convenience sampling; the results may be biased.
Question 3 A health department wants to examine the effects of air pollution on respiratory health.
Correct They monitor a group of residents over five years, recording their exposure to air
5.00 points out pollution and any respiratory issues that develop. This study is best classified as:
of 5.00
Select one:
a. A retrospective experimental study.
b. A cross-sectional observational study.
c. A prospective observational longitudinal study.
d. A randomized controlled trial.
Introduction to Statistics / Benchmark 3: Checkpoints 1-2 / Benchmark 3: Checkpoints 1-2
Started on Sunday, November 9, 2025, 6:21 PM
State Finished
Completed on Sunday, November 9, 2025, 6:42 PM
Time taken 20 mins 52 secs
Grade 120.00 out of 125.00 (96%)
Question 1
Correct
n
5.00 points out
of 5.00
Select one:
, 12/8/25, 8:01 AM Benchmark 3: Checkpoints 1-2: Attempt review
Question 2 A marketing firm wants to know customer opinions about a new product. They decide
Correct to interview people who are shopping at a mall where the product is sold. Which type
5.00 points out of sampling is being used, and what is a potential issue with this sampling method?
of 5.00
Select one:
a. Stratified sampling; the strata may be improperly defined.
b. Cluster sampling; it may not represent the entire population.
c. Simple random sampling; the sample may be too small.
d. Convenience sampling; the results may be biased.
Question 3 A health department wants to examine the effects of air pollution on respiratory health.
Correct They monitor a group of residents over five years, recording their exposure to air
5.00 points out pollution and any respiratory issues that develop. This study is best classified as:
of 5.00
Select one:
a. A retrospective experimental study.
b. A cross-sectional observational study.
c. A prospective observational longitudinal study.
d. A randomized controlled trial.
