# statistics

So if a scale has 30 items in it, and if an individual gets a score of 20 what does this mean? The only way to answer this is to look at the standardization sample, find out what the mean score in the sample was, let's say 15, and standard deviation in the population was five then a score of 20 is one standard deviation above the mean. If we take the mean raw score and make it equal 50 and then take the standard deviation score and make that equal to 10 then a score of 20 on the scale is equal to what number?

1. 👍 0
2. 👎 0
3. 👁 129
1. Assuming that each item on the scale has a value of one, how could the mean be 50?

Are you talking about merely a number (raw score, 20 seems to be the raw score) or a Z score? If the latter,

Z = (score-mean)/SD

1. 👍 0
2. 👎 0
posted by PsyDAG
2. thanks!

1. 👍 0
2. 👎 0
posted by phil
3. You're welcome.

1. 👍 0
2. 👎 0
posted by PsyDAG

## Similar Questions

1. ### statistics

So if a depression scale has 30 items in it, and if an individual gets a score of 20 what does this mean? The only way to answer this is to look at the standardization sample, find out what the mean score in the sample was, let's

asked by phil on July 18, 2012
2. ### ENGLISH/MATH HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

NYS ELA 7 Score - Level 2 (high two so I was seven points away to a three) My Scale Scare - 658 Level Two: 642-664 (scale score) Level Three: 665-697 (scale score) NYS Math 7 Score - Level 3 My Scale Score - 678 Level Three -

asked by Laruen on March 23, 2013
3. ### Behavioral Statistics

Explain the general rationale behind using a z-score for describing how an individual performed on an exam compared to just stating the overall mean and the individual's score. How does the information differ in the two

asked by slomomo on October 22, 2015
4. ### Math

A population with μ = 59 and s = 8 is standardized to create a new distribution with μ = 100 and s = 20. After the transformation, an individual receives a new score of X = 90. The original score for this individual was X = 51.

asked by Annie on December 15, 2017
5. ### Statistic/Psychology

Joe had a score of 72 on the Counseling Aptitude Scale, and the standard error of measurement of the scale is 3. Where would we expect Tom's true score to fall 99.5 percent of the time? a.71 to 73 b. 69 to 75 c. 66 to 78 d. 63 to

asked by Crystal on July 27, 2013
6. ### Statistic/Psychology

Joe had a score of 72 on the Counseling Aptitude Scale, and the standard error of measurement of the scale is 3. Where would we expect Tom's true score to fall 99.5 percent of the time? a.71 to 73 b. 69 to 75 c. 66 to 78 d. 63 to

asked by Crystal on July 26, 2013
7. ### Test and Measures

In a sample of students, the average score on an assessment was 65. This individual obtained a z score of 0. What test score did he receive?

asked by Shay on May 29, 2014
8. ### Statistic Psychology

Joe had a score of 72 on the Counseling Aptitude Scale, and the standard error of measurement of the scale is 3. Where would we expect Tom’s true score to fall 99.5 percent of the time? a. 71 to 73 b. 69 to 75 c. 66 to 78 d. 63

asked by A7 on January 22, 2017
9. ### Statistics

What does this statement mean - "Measurements are nearly always of individual differences" And WHAT tools do we have that will allow us to interpret individual measures? My thinking for the first part of the question is something

asked by Bulldog on August 11, 2009
10. ### Statistics

a score of 10 indicates severe depression, while a score of 0 indicates no depression. From reports, she is able to find out about past testing. Fourth graders at her school usually score 5 on the scale, but the variation is not

asked by anonymous on August 2, 2010

More Similar Questions