# standard deviation

### If the distribution of IQ scores is bell-shaped, with a mean of 100 and a standard deviation of 15,

If the distribution of IQ scores is bell-shaped, with a mean of 100 and a standard deviation of 15, then approximately ____% of IQ scores are less...
Thread by: math_celebrity, Feb 16, 2022, 0 replies, in forum: Calculator Requests

### If approximately 68% of the scores lie between 40.7 and 59.9 , then the approximate value of the sta

If approximately 68% of the scores lie between 40.7 and 59.9 , then the approximate value of the standard deviation for the distribution,...
Thread by: math_celebrity, Jan 16, 2018, 0 replies, in forum: Calculator Requests

### Prizes hidden on a game board with 10 spaces. One prize is worth \$100, another is worth \$50, and tw

Imagine you are in a game show. Prizes hidden on a game board with 10 spaces. One prize is worth \$100, another is worth \$50, and two are worth...
Thread by: math_celebrity, Jan 8, 2017, 0 replies, in forum: Calculator Requests

### A random sample of STAT200 weekly study times in hours is as follows: 2 15 15 18 30 Find the sam

A random sample of STAT200 weekly study times in hours is as follows: 2 15 15 18 30 Find the sample standard deviation. (Round the answer to...
Thread by: math_celebrity, Jan 8, 2017, 0 replies, in forum: Calculator Requests