AdministratorHow do you interpret mean and mode?
The mode is the value that occurs most frequently in a set of observations. Minitab also displays how many data points equal the mode. The mean and median require a calculation, but the mode is determined by counting the number of times each value occurs in a data set.
When the P value is used for hypothesis testing the null hypothesis is rejected if?
In consequence, by knowing the p-value any desired level of significance may be assessed. For example, if the p-value of a hypothesis test is 0.01, the null hypothesis can be rejected at any significance level larger than or equal to 0.01. It is not rejected at any significance level smaller than 0.01.
How do you know when to reject or fail to reject the null hypothesis?
After you perform a hypothesis test, there are only two possible outcomes.
- When your p-value is less than or equal to your significance level, you reject the null hypothesis. The data favors the alternative hypothesis.
- When your p-value is greater than your significance level, you fail to reject the null hypothesis.
How do you write statistical results in APA?
1. General tips for Reporting Statistics APA Style
- Use readable spacing, placing a space after commas, variables and mathematical symbols.
- Don’t state formulas for common statistics (e.g. variance, z-score).
- In general, round decimals to two places, with the exception of p-values (see p-values in the next section).
How do you write a statistical result section?
Every statistical test that you report should relate directly to a hypothesis. Begin the results section by restating each hypothesis, then state whether your results supported it, then give the data and statistics that allowed you to draw this conclusion.
How do you use the P value to reject the null hypothesis?
Set the significance level, , the probability of making a Type I error to be small — 0.01, 0.05, or 0.10. Compare the P-value to . If the P-value is less than (or equal to) , reject the null hypothesis in favor of the alternative hypothesis. If the P-value is greater than , do not reject the null hypothesis.
How do you report chi square results in APA?
Chi Square Chi-Square statistics are reported with degrees of freedom and sample size in parentheses, the Pearson chi-square value (rounded to two decimal places), and the significance level: The percentage of participants that were married did not differ by gender, X2(1, N = 90) = 0.89, p > . 05.
What does a chi square table tell you?
The chi-squared statistic is a single number that tells you how much difference exists between your observed counts and the counts you would expect if there were no relationship at all in the population. Where O is the observed value, E is the expected value and “i” is the “ith” position in the contingency table.
What is considered a good survey response rate?
50%
What is the minimum sample size for statistical significance?
Most statisticians agree that the minimum sample size to get any kind of meaningful result is 100. If your population is less than 100 then you really need to survey all of them.
How do you know to reject or fail to reject?
Suppose that you do a hypothesis test. Remember that the decision to reject the null hypothesis (H 0) or fail to reject it can be based on the p-value and your chosen significance level (also called α). If the p-value is less than or equal to α, you reject H 0; if it is greater than α, you fail to reject H 0.
Do you reject or fail to reject H0 at the 0.05 level of significance?
We reject the null hypothesis when the p-value is less than α. But 0.07 > 0.05 so we fail to reject H0. For example if the p-value = 0.08, then we would fail to reject H0 at the significance level of α=0.05 since 0.08 > 0.05, but we would reject H0 at the significance level of α = 0.10 since 0.08 < 0.10.