Purchase Solution

Discussion on some statistical terms: F-ratio, error variance

Not what you're looking for?

Ask Custom Question

What is an F-ratio? Define all the technical terms in your answer.
What is error variance and how is it calculated?
Why would anyone ever want more than two (2) levels of an independent variable?
If you were doing a study to see if a treatment causes a significant effect, what would it mean if within groups variance was higher than between groups variance? If between groups variance was higher than within groups variance? Explain your answer
What is the purpose of a post-hoc test with analysis of variance?
What is probabilistic equivalence? Why is it important?

Purchase this Solution
Solution Summary

The solution discusses some statistical terms: F-ratio, error variance, independent variable, between groups variance, within groups variance, post-hoc test and probabilistic equivalence.

Solution Preview

What is an F-ratio? Define all the technical terms in your answer.
Answer: F ratio is the division of two variances from two independent samples. Usually, the formula is F=s12/s22 where s12 and s22 are two sample variances from two samples. And F-ratio is used to test the independence of two samples.

What is error variance and how is it calculated?
Answer: error variance is a measurement to show how far the actual data is far from the fitted data. Usually, the formula is error variance=total variance-systematic variance.

Why would anyone ever want more than two (2) levels of an independent ...

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

  • Linear Regression

    The variance of FVC that is predicted (288.28) divided by the total FVC variability (617.18) gives the coefficient of determination (.467). The F ratio (699.43) provides the test of statistical significance.

  • Statistics Definitions - F Distribution

    Type II error is the error of not rejecting the null hypothesis when it is false. The solution gives substantive definitions for statistical terms.

  • Regression analysis in SPSS

    e) Variance of estimate and the standard error of estimate. f) Standard error of the regression coefficient. g) T ratio for the test of the regression coefficient. What should the square of the t equal?

  • Descriptions and Example Questions - Statistical Terms

    236479 Descriptions and Example Questions - Statistical Terms Describe, in your own words, the following terms and give an example of each. a. Analysis of Variance b. One-way ANOVA c. Between-group variance d. Within-group variance e.

  • Two Way ANOVA: Gender, Marital Status, and Happiness

    The F ratio for gender is the mean square of gender divided by mean square of error or within variance. Thus, F ratio for gender = 68.15/9.299=7.33 2.

  • Descriptions of Statistical Terms

    238087 Descriptions of Statistical Terms Describe, the following terms and give an example of each. a. Analysis of Variance b. One-way ANOVA c. Between-group variance d. Within-group variance e. Sum of squares between groups f.

  • Regression Analysis: Implementation and Interpretation

    The F test of significance of a regression equation provides idea about the overall statistical significance of the regression model. It is judged on the basis of the p value of the F ratio.

  • MCQ on ANOVA, Correlation, Hypothesis

    17: Results of an analysis of variance produces SSbetween = 20, SSwithin = 30, and an F-ratio with df = 2, 15.

  • MCQs: ANOVA

    On average what value is expected or the F-ratio if the null hypothesis is true? * k-1 * 1.00 * N-k * 0 (this is the one I had chosen)? On average what value is expected for the F-ratio if the null hypothesis is false?

View More Related Solutions