Which is the best interpretation for the following results of a simple time-series design study evaluating the effects of a new school program that aims to decrease the number of school dropouts?

A) The intervention was effective.
B) The results appear to be attributed to an ongoing trend that was improving with the passage of time.
C) The results appear to be attributed to regression to the mean.
D) The results appear to be attributed to history.
E) All but a are correct.

Question

Which is the best interpretation for the following results of a simple time-series design study evaluating the effects of a new school program that aims to decrease the number of school dropouts?

A) The intervention was effective. 
B) The results appear to be attributed to an ongoing trend that was improving with the passage of time. 
C) The results appear to be attributed to regression to the mean. 
D) The results appear to be attributed to history. 
E) All but a are correct.

Quizplus · Accepted Answer

The Answer of Which is the best interpretation for the following results of a simple time-series design study evaluating the effects of a new school program that aims to decrease the number of school dropouts?

A) The intervention was effective. 
B) The results appear to be attributed to an ongoing trend that was improving with the passage of time. 
C) The results appear to be attributed to regression to the mean. 
D) The results appear to be attributed to history. 
E) All but a are correct.

Which Is the Best Interpretation for the Following Results of a Simple