Purchase Solution

Interpreting Standard Deviation

Not what you're looking for?

Ask Custom Question

Your workplace reduces all workplace scores on a particular employee aptitude test into z-scores which are placed into a district-wide distribution of scores. Last year, your newly hired employees ranged between -1 and +2 standard deviations, and this year's newly hired employees range between -2 and +3.

What do these numbers tell you about the group entering your workplace?

Purchase this Solution
Solution Summary

The expert examines interpreting standard deviation in the workplace.

Solution Preview

The standard deviation is a measure of the dispersion of data from the mean of the data. If the standard deviation is high, the data are spread out, and if the standard deviation is low, the data are closely bunched together near the mean.

You can describe each data point by saying how far it is from the mean in terms of standard deviations ...

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • Hypothesis Testing & Confidence Interval

    Sample standard deviation, s = = 9.62000231 Standard error = = 3.04211184 Formulate the null hypothesis and the investigation.

  • Standard Deviation and Risk

    478336 Standard Deviation and Risk What is the importance of the standard deviation in interpreting and drawing conclusions about risk?

  • American Intellectual Union (AIU) Labor

    Your analysis should also include the use of two measures of variability (standard deviation and variance). 6. If a measure is not applicable, then explain why. 7.

  • Using and Interpreting Concepts

    In a sample of 100 people, you find that the mean consumption of tea is 7.8 gallons per year with a standard deviation of 2.67 gallons.At a=0.07, can you support the society's claim? (Adapted from U.S.

  • The Use of Standard Deviation and Research

    Also, how might it help you in interpreting someone else's research? Standard deviation is the measure of dispersion of the data around the mean. How closely or loosely is the data packed around the mean is indicated by the standard deviation.

  • Carl Pearson's coefficient of skewness

    Step-1: Calculate mid points for the class interval Step2: Calculate average Step3: Calculate Median Step4: Calculate Standard deviation Step5: Carl Pearson's coefficient = 3*(mean-median)/standard deviation Explanation: The value of

  • The population of the random variable

    441707 Interpreting Normal Distributions Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?

  • Assumptions, Calculations, and Confidence Interval for Means

    So upper bound=mean+critical value*standard deviation/sqrt(sample size) and lower bound=mean-critical value*standard deviation/sqrt(sample size). Here, mean is given as 14.67 and standard deviation is given as 1.16.

  • Descriptive Statistics

    228560 Mean, Median and Standard Deviation and Interpreting Data Refer to the CIA data, which reports demographic and economic information on 46 countries. a. Select the variable Life Expectancy 1.

View More Related Solutions