Posted by **Lezlie** on Wednesday, June 11, 2008 at 1:18am.

in a classic study of problem solving, katona demonstrated that people whoa re required to figure out a problem on their own will learn more than people who are given the solution. One group of participants is presented with a series of problems that hey must figure out. second group sees the same problems but gets an explanation of the solutions. Later both groups are given a new set of similar problems and their problem-solving scores are as follows:

On their own

n=10

M=78

SS=1420

Given Solutions

n=15

M=66

SS=2030

ss stands for sum of squares

- statistics -
**PsyDAG**, Thursday, June 12, 2008 at 2:24am
To find the significance of the difference between two means, we need to divide this difference by the standard error of the difference between means.

To find the standard error of the difference between means, we need to know the standard deviation (SD) of both groups.

To get the standard SD, you need both sum of squares (ΣX^2) and the sum of the scores squared ([ΣX]^2). You only give me one of these terms.

We need more information — or the corect information.

I hope this helps. Thanks for asking.

## Answer this Question

## Related Questions

- statistics - Oxytocin is a naturally occurring brain chemical that is nicknamed ...
- Problem solving - A group of 52 people attendance ball game. There are three ...
- Math - I fell asleep trying to figure this one out ... if you could help I would...
- statistics - a sample of 120 men and women randomly divided into 3 groups with ...
- maths - number of films seen by a group of people during the past year No of ...
- statistics - A group of applicants for a position consists of 8 people who are ...
- Math - Tell me how to figure out these probabilities In how many different ...
- science - i just want to know if my answeres are correct! A.The problem = the ...
- Math-Statistics - It appears that people who are mildly obese are less active ...
- chemistry - This question I really don't get it. I tried tried tried to figure ...