Statistics

posted by .

What does it mean when we state: "Many frequency distributions in the social sciences are approximately?

And, why does this occur?

My thinking is:
I would have to say that many frequency distributions, in particularly the social sciences are approximately normal. When working with a typical distribution, there are going to be a few low scores and also a few high ones, but the majority will fall in the middle. This probably occurs when the probability of all the many determiners of a trait pointing in the same direction is virtually nil, and that of a balanced combination of determiners is much higher. As mentioned in class, the normal distribution is a good indicator to the kinds of distribution frequently encountered in medical and behavioral investigations and is the best-known for statistical treatments.

Is my logic correct here?

• Statistics -

The assumption is that any distribution of scores determined solely by chance factors will approximate a normal distribution, especially with a higher number of scores.

I'm not sure what you are saying in the third sentence of your thinking. It is unclear.

I hope this helps. Thanks for asking.

Similar Questions

1. Statistics

For two normal distributions with the same mean, but different standard deviations, the 95% confidence interval will be: (a) The same for both distributions (b) Larger for the distribution with the smaller standard deviation (c) Smaller …
2. statistics

The statement 'The median of a distribution is approximately equal to the mean of the distribution' can be made true by adding which of the following: a. For all distributions b. only for symmetric, mound-shaped distributions c. For …
3. MATH

What are open-ended frequency distributions?
4. Statistics

How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions?
5. statistics

Sat scores l around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distributions. a person who scores 600 on the sat 1 has approximately what percentile rank within …
6. Statistics

How will I know the modal class from a grouped data w/ equal class sizes if the highest frequency is 7 but then it appears thrice in 3 intervals. 34.00 - 39.69 frequency: 7 39.70- 45.39 frequency: 7 62.50-68.19 frequency: 7