A t-test is designed to test a null hypothesis by determining if two sets of data are significantly different from one another, while a chi-squared test tests the null hypothesis by finding out if there is a relationship between the two sets of data. The null hypothesis is a prediction that states there is no relationship between two variables.
Continue ReadingA student can use a one-sample t-test or a two-sample t-test. A one-sample t-test is designed to answer a null hypothesis that concerns the data set's mean when the data are from independent observation and follow a normal distribution.
The two-sample t-test evaluates the null hypothesis when two sets of data are collected. Both sets of data must come from the same sample size for the results to be valid.
For a chi-squared test, the two sets of data must first be divided into categories. Once the data are divided, the chi-squared test is used to evaluate the two sets of data to see if there is a relationship between the figures.
To run a t-test or a chi-squared test, students can use a graphing calculator or a computer program. Though these aids run the tests, the students must input the correct data for accurate results.
Learn more about StatisticsA scatter plot is a mathematical diagram showing the relationship between two sets of data. Individual points are positioned according to the variables assigned to the vertical and horizontal axis.
Full Answer >The T-test is a statistical test that measures the significance of the difference between the means in two sets of data in relation to the variance of the data.
Full Answer >Statistical significance shows the mathematical probability that a relationship between two or more variables exists, while practical significance refers to relationships between variables with real-world applications, according to California State University, Long Beach. Two or more variables do not need statistical significance to have practical significance, and vice versa.
Full Answer >In mathematics, a ratio illustrates the relationship between two things, often quantities, while a proportion refers to the equality of two given ratios. A ratio is generally only an expression, while a proportion can be written as an algebraic equation.
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