1.3 Test your knowledge on testing your data

Fill in the blank: Hypothesis testing is a way to see if a survey or experiment has ___ results

A. meaningful

B. insufficient

C. random

D. probable

A. Meaningful

A research team conducts an experiment to determine if a new cybersecurity tool is more effective than the previous version. What type of results are required for the experiment to be statistically significant?

A. Results that are real and not caused by random chance

B. Results that are unlikely to occur again

C. Results that are inaccurate and should be ignored

D. Results that are hypothetical and in need of more testing

A. Results that are real and not caused by random chance

in order to have a high confidence level in a customer survey, what should the sample size accurately reflect?

A. The most valuable members of the population

B. The predictions of stakeholders

C. The entire population

D. The trends from previous customer surveys

C. The entire population

Fill in the blank: Typically, a data professional aims to achieve a statistical power of at least ___ to consider their results statistically significant.

A. 0.8, or 80%

B. 0.1, or 10%

C. 1, or 100%

D. 0.6, or 60%

A. 0.8, or 80%