Question 11 Is it ever appropriate to reach a causal conclusion from data collected in a scientific study that showed a statistically significant effect? Yes but only if the P-value is very, very small. Yes if the study is a randomized experiment, but not if it is an observational study. We can never conclude about causation from just one study, even if the findings are statistically significant. Yes as long as the study uses some form of randomness to avoid bias.
Added by David C.
Close
Step 1
This random assignment helps to eliminate bias and confounding variables, making it more likely that any observed effect is due to the treatment being studied. Show more…
Show all steps
Your feedback will help us improve your experience
Marc Lauzon and 73 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Is it ever appropriate to reach a causal conclusion from data collected in a scientific study that showed a statistically significant association? Yes, if the study is a randomized experiment but not an observational study. We can never conclude about causation from just one study, even if the association is statistically significant. Yes, as long as the study uses proper methodology and controls to avoid bias. Yes, but only if the variables are carefully controlled and the study is well-designed.
Sri K.
As we have noted in previous chapters, even a very small effect can be significant if the sample is large enough. Suppose, for example, that a researcher obtains a correlation of 0.60 for a sample of 10 participants. a) Is this sample sufficient to conclude that a significant correlation exists in the population? Use a two-tailed test with Ě‘. b) If the sample had 25 participants, is the correlation significant? Again, use a two-tailed test with Ě‘.
Madhur L.
True or False. An observational study, if carefully done, can usually establish causation. Justify your answer.
Discrete Mathematics
Statistical Literacy
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD
