Purchase Solution

Frequency Distribution with Skewed Data

Not what you're looking for?

Ask Custom Question

1. Identify three uses for a frequency distribution. Please provide realistic health related examples.

2. Briefly identify the differences between a normal, positive and negative skew. How does this skew or distribution curve relate to standard error? What does the standard error mean for the results? Feel free to use and example to explain your answer.

Purchase this Solution
Solution Summary

The writeup describes 3 uses of frequency distribution with examples, the differences between normal, positively skewed and negatively skewed data and how measures such as standard error are affected in cased of skewed data sets

Solution Preview

The uses for a frequency distribution are
1. To easily assess the descriptive statistics for a data set such as its median, mean and standard deviation. For example, a frequency distribution showing the number of customers arriving at a health centre for each hour of the day can help the management in identifying the peak hours and adjusting staff deployment accordingly.
2. As the basis of standard hypothesis testing i.e. statistically testing if an observed hypothesis can be termed as being true or not. A frequency table helps understand the differences and similarity across data sets and understand potential hypotheses as well as validate these. For example, a hypothesis such as "the number of reported cases of cold and flu increase ...

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

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

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.

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

  • Considering Statistical Concepts

    _ diagram is a bar chart in which categories are plotted in order of decreasing relative frequency and in which the cumulative relative frequency is plotted on the same graph. *When distribution is skewed ?_ it is negatively skewed.

  • Mean and Median Comparisons

    Sometimes it is helpful to keep in mind that when distribution is skewed to the left, the tail of the distribution is to the left meaning that the relative frequency of the numbers are not equally distributed.

  • Frequency, variation and distrinbution

    From the frequency distribution plot, we can see that the distribution is slightly skewed towards right. This can also be confirmed from the skew value of 0.51 (which is 0 for symmetric distribution). The distribution is not symmetric.

  • Frequency Distribution and Data Samples

    Does it necessarily true that any frequency distribution contains any form of data sample? Please illustrate your answer with examples. 2.

  • Multiple choice questions on descriptive statistics

    X for the scores in a frequency distribution table, you simply add the values in the X column. True False 3. A grouped frequency distribution table lists one interval as, 20?24.

  • Birth Weights: Mean, median, mode, and more

     How is the data distributed? Is it skewed or symmetrical, how do you know? What does distribution tell you about the data? According to the Frequency by Weight Interval histogram, the data are skewed left.

  • Displaying Data in a Histogram

    Using the power of Excel, this solution shows how to display a frequency distribution histogram for basket ball team salary data.

  • Basic Statistics Questions on Probability

    A distribution that has a long left tail is called: Positive Skewed Negative Skewed Symmetric both a and b 6.

  • Measures of Central Tendency

    (d) Which data set is multimodal, that is, it has more than one modes? #4. (a) What is a positively skewed distribution? (b) What measure of central tendency would be used with this type of distribution? (c) Why? #5.

View More Related Solutions