ISDS Quiz Questions – practice questions with answers and revision material for decision
sciences
What is the percentage of people who live below the poverty level in the west or Midwest? -
correct answer ✔✔41.87
Approximate the percentage of houses that sold for more than $500,000 - correct answer
✔✔60
The sample data below shows the number of hours spent by 5 students over the weekend to
prepare for Mondays Business Stats Test
3 12 2 3 5
The 75th percentile of the data is closest to_________ - correct answer ✔✔8.5
Bias can occur in sampling. Bais refers____________ - correct answer ✔✔the tendency of a
sample statistic to systematically over or underestimate a population parameter.
A Type 1 error occurs when we_________ - correct answer ✔✔reject a true null hypothesis
What is the purpose of calculating a confidence interval? - correct answer ✔✔To provide a
range of values that, with a certain measure of confidence, contains the population parameter
of interest.
Fishers LSD method is appleid when______ - correct answer ✔✔ANOVA test has rejected the
null hypothesis of equal population means
sciences
What is the percentage of people who live below the poverty level in the west or Midwest? -
correct answer ✔✔41.87
Approximate the percentage of houses that sold for more than $500,000 - correct answer
✔✔60
The sample data below shows the number of hours spent by 5 students over the weekend to
prepare for Mondays Business Stats Test
3 12 2 3 5
The 75th percentile of the data is closest to_________ - correct answer ✔✔8.5
Bias can occur in sampling. Bais refers____________ - correct answer ✔✔the tendency of a
sample statistic to systematically over or underestimate a population parameter.
A Type 1 error occurs when we_________ - correct answer ✔✔reject a true null hypothesis
What is the purpose of calculating a confidence interval? - correct answer ✔✔To provide a
range of values that, with a certain measure of confidence, contains the population parameter
of interest.
Fishers LSD method is appleid when______ - correct answer ✔✔ANOVA test has rejected the
null hypothesis of equal population means
