Sunday

September 21, 2014

September 21, 2014

Posted by **Laly** on Thursday, January 24, 2008 at 8:18pm.

What does it mean to say that x = 152 has a standard score of +1.5?

What does it mean to say that a particular value of x has a z-score of -2.1?

In general, what is the standard score a measure of?

- statistics -
**Damon**, Thursday, January 24, 2008 at 9:08pmstandard score = z

z = (x-mean of whole population)/sigma of whole population

In other words z measures how many standard deviations your data point x is away from the mean of the population.

z = 1.5 means your data point x is 1.5 standard deviations bigger than the average of the population

z = -2.1 means your data point is 2.1 standard deviations below the mean.

**Answer this Question**

**Related Questions**

statistics - . In terms of the mean and standard deviation: - What does it mean ...

statistics - . In terms of the mean and standard deviation: - What does it mean ...

Statistics - In terms of the mean and standard deviation: -What does it mean to ...

statistics - So if a depression scale has 30 items in it, and if an individual ...

statistics - So if a scale has 30 items in it, and if an individual gets a score...

Statistics - A researcher performs a hypothesis test to test the claim that ...

Statistics - Students were given an exam with 300 multiple-choice questions. The...

statistics - say that you have a distribution of exam scores with a mean of 57 ...

Math - Score Percentile Score Percentile Score Percentile Score Percentile -3.5 ...

statistics - The scores on the final exam in a course have approximately a bell-...