An IQ test was administered to 5 persons before and after they are trained. The results are given below.?

Question

CandidatesIIIIIIIVV
IQ before Training110120123132125
IQ after training120118125136121
Test whether there is any change in IQ after the training programme. How?

Answer 1

There are three different ways you can define "change " in IQ
after the training so you must specify what you are talking about.
The initial IQ's were 110 120 123 132 125
After training IQ's were 120 118 125 136 121

How did the IQ's change after training?
First, three IQ's were higher after training. (an increase)
Secondly, before training the median(middle) IQ was 123.
After training the median was 121 (a decrease).
Finally, before training the average IQ was 122.
After training it was 124 (an increase).

So, three people showed an increase in IQ after training,
and the average increase for the whole group was 2 points.

Answer 2

I will try to answer based on what I understand from the above.
There are 5 candidates who took the IQ test and all of the results except for the first show no significant differences. Now look at the first candidates result. He initially got 110 and got 120 after the training. I would think if a person who has taken the test before would do better than another who does not know how an IQ test is structured (both with the same IQ). To me, the training is nothing but just familiarizing of the IQ test. Thus the above results. =)

Answer 3

There is no significant difference (p= .46) between pre and post training scores. I ran a t test comparing the two. The standard deviation is smaller in the post training scores meaning that there is less difference in the scores than before the training. I know this is probably just a question from class or a book but IQ typically does not change drastically over time. Also standard IQ tests cannot be given more than once a year to maintain validity of the test. You could use a different test but that leads to a lot more issues with reliability that I won't go into here. Hope this helps.

Answer 4

The first candidate's IQ registered an increase of 110.9%

The second showed a decline of 9.0%

The third a marginal rise of 11.09% and

Fourth the highest improvement of 16%

To find out the difference did not need a very high IQ

Answer 5

If the results are in order, three of the tested persons showed an increased capacity for learning; two indicate a lesser capacity.

Answer 6

this is not a question. it's not even phrased or formatted in a way that can be understood

Answer 7

huh? the testing is done, the results are right there...