Purchase Solution

Stem plot and standard deviation

Not what you're looking for?

Ask Custom Question

Make a stem plot to check if there are no major departures from Normality. What proportions of the scores are within on standard deviation and within two standard deviations of the mean? What would these proportions be in exactly Normal distribution?

Attachments
Purchase this Solution
Solution Summary

The stem plot and standard deviation is examined. A complete, neat and step-by-step solution is provided in the attached file.

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.

Measures of Central Tendency

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

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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • Company ABC Sales: Stem and Leaf Plot Data

    So about 68% of the data lies between 22.66 and 46.84 The difference between these values is two standard deviations or 24.18. The solution determines the range, median and range of data from the given stem and leaf plot data.

  • Frequency distribution, histogram and stem-and-leaf

    for variable A Stem and Leaf plot for variable A stem unit = 10 leaf unit = 1 Frequency Stem Leaf 6 0 1 2 3 6 7 8 5 1 0 1 2 5 9 1 2 0 12 The mean, the median and the standard deviation for variable

  • BrainMass Expert's Approach to Statistics

    deviation 15.39 minimum 19 maximum 67 range 48 Stem and Leaf plot for # 1 stem unit = 10 leaf unit = 1 Frequency

  • Estimating Mean Percent Change in Population

    Suppose that the percent change in this population has standard deviation SD = 2.5 %. Make a stem-plot of the data to see that they appear to follow a Normal distribution quite closely.

  • Statistics

    If the standard deviation of a probability distribution is 6.25, the variance is 2.30 True/False 4. A stem and leaf plot is useful for keeping more precision than a grouped frequency distribution. True/False 5.

  • Analyzing Descriptive Statistics and Graphs

    The solution gives various descriptive statistics like mean, median and standard deviation. Pareto chart, stem and leaf plot and pie chart are also given for some problems.

  • Retention of Patients

    0 high extremes 0 Stem and Leaf plot for # 1 stem unit = 100 leaf unit = 10 Frequency Stem Leaf 9 0 0 1 2 3 4 5 7 7 8 9 1 0 0 2 4 4 4 6 7 9 8 2 1 2 3 3 6 6 8 8 7 3 2 2 5 6 6 8 9 4 4 5 5 6

  • Stem and leaf plot and Hypothesis testing

    From the data, plot a histogram and a stem-and-leaf diagram. Also calculate the mean, median, mode, range, standard deviation, and quartiles of the data. Explain what this analysis tells you.

  • Stem and Leaf, Frequency Histogram

    and Leaf plot stem unit = 10 leaf unit = 1 Frequency Stem Leaf 5 1 1 3 7 9 9 8 2 2 4 4 4 6 8 8 9 7 3 0 0 2 3 3 7 9 10 4 1 1 2 3 3 6 6 6 8 9 11 5 2 2 3 3 4 6 7 7 7 9 9 4 6 0 1 1 3 45 2.22 In the following stem-and-leaf

View More Related Solutions