Question

In preparing for a test on a set of material, is it better to study one topic at a time or to study topics mixed together? In one study,1 a sample of fourth graders were taught four equations. Half of the children learned by studying repeated examples of one equation at a time, while the other half studied mixed problem sets that included examples of all four types of calculations grouped together. A day later, all the students were given a test on the material. The students in the mixed practice group had an average grade of 77, while the students in the one-at-a-time group had an average grade of 38. What is the best estimate for the difference in the average grade between fourth-grade students who study mixed problems and those who study each equation independently?

Give the value of the best estimate.​

Answer 1

The best estimate for the difference in average grades between students who study mixed problems and those who study one topic at a time is 39 points, with mixed practice students scoring higher.

Step-by-step explanation:

The best estimate for the difference in the average grade between fourth-grade students who study mixed problems and those who study each equation independently is found by subtracting the average grade of the one-at-a-time group from the average grade of the mixed practice group.

Average grade of the mixed practice group = 77
Average grade of the one-at-a-time group = 38

To find the difference, we do the following calculation:
77 (mixed practice) - 38 (one-at-a-time) = 39.

Therefore, the best estimate for the difference in the average grades is 39 points.

Answer 2

The difference between 77 and 38 is 39. According to this paragraph it is better to study topics mixed together

Step-by-step explanation: