Construct the one-way ANOVA table. 9) A one-way ANOVA is to be performed. Independent random samples are selected 9) from three different populations. The sample data are given in the table below. ABC Construct the one-way ANOVA table for the data.QUESTION 13 2 points Save Answer The following are reasons for studying randomised controlled experiments in an econometrics course, with the EXCEPTION of: O a. when experiments are actually conducted, their results can be very influential, so it is important to understand the limitations and threats to validity of actual experiments as well as their strength. O b. randomised controlled experiments in economics are common. O " external circumstances sometimes produce what appears to be randomisation. O d. at a conceptual level, the notion of an ideal randomised controlled experiment provides a benchmark against which to judge estimates of causal effects in practice.How does a natural experiment differ from a randomized one? O A. A natural experiment is expensive, while a randomized experiment is cheap. O B. Natural experiments are not influenced by omitted variables; randomized experiments contain omitted variables O C. A natural experiment uses existing variation, while a randomized experiment generates variation. O D. A natural experiment generates variation, while a randomized experiment uses existing variation. Which type of experiment is likely to yield more accurate results? O A. Randomized, because a natural experiment may not be completely randomized. O B. Natural, because there could be reverse causality. O C. Natural, because there could be an omitted variable. O D. Randomized, because a natural experiment may be completely influenced by chance. Suppose you had to find the effect of seatbelt rules on road accident fatalities. Would you choose to run a randomized experiment or would it make sense to use natural experiments here? Explain. O A. Randomized, because natural experiments with seatbelt rules may exist. O B. Natural, because seatbelt rules may be unrelated to road accident fatalities. O C. Randomized, because seatbelt rules may be influenced by road accident fatalities. O D. Natural, because seatbelt rules may increase road accident fatalities.People might behave very differently in artificial laboratory conditions than they would outside and so their behavior might be very artificial. O Correlational Study Observational Study Laboratory Experiment Field Experiment Case Study Secondary Data Analysis Natural Experiment Survey Next Previous