A school is evaluating whether or not they should adopt a new reading program. To aid in their decision, they gathered two sources that reviewed a study of the program Source 1
The report found that participants in the reading program experienced 26% increased growth on a measurement of attainment in English language arts in comparison to the control group
Furthermore, students previously struggling in English language arts were able to make greater gains than other students in the program. This suggests that the program might be a good candidate as an
intervention tool for struggling readers
Source 2
Although there are positive findings for the reading program as indicated by the sizeable gains in English language arts of those who participated, there are some additional factors to consider. It was
found that demographics were controlled for properly, and that indeed those who struggled previously had even farger gains. The sampling procedure involved in choosing the students was not a true
randomized sample, but based on whether or not students chose to participate in the program
The school decided to conduct an additional analysis of the program before making a decision to commit to buy the program. Which of the following detais trom the sources MOST koly led to this decision?
The report found that participants in the reading program experienced 26% increased growth on a measurement of attainment in English language arts in comparison to the control group
A
B
This suggests that the program might be a good candidate as an intervention tool for struggling readers
С
It was found that demographics were controlled for properly, and that indeed those who struggled previously had even larger gains
D
However, the sampling procedure involved in choosing the students was not a true randomized sample, but based on whether or not students chose to participate in the program