If you are unsure whether your dependent variable is continuous (i.e., measured at the interval or ratio level), see our Types of Variable guide. Examples of such continuous variables include height (measured in feet and inches), temperature (measured in ☌), salary (measured in US dollars), revision time (measured in hours), intelligence (measured using IQ score), firm size (measured in terms of the number of employees), age (measured in years), reaction time (measured in milliseconds), grip strength (measured in kg), power output (measured in watts), test performance (measured from 0 to 100), sales (measured in number of transactions per month), academic achievement (measured in terms of GMAT score), and so forth.
Minitab 18 predict how to#
In this guide, we show you how to carry out linear regression using Minitab, as well as interpret and report the results from this test. If your dependent variable is dichotomous, you could use a binomial logistic regression. Alternatively, if you just want to establish whether a linear relationship exists, but are not making predictions, you could use Pearson's correlation. Note: If you have two or more independent variables, rather than just one, you need to use multiple regression. Alternatively, you could use linear regression to understand whether cholesterol concentration (a fat in the blood linked to heart disease) can be predicted based on time spent exercising (i.e., the dependent variable would be "cholesterol concentration", measured in mmol/L, and the independent variable would be "time spent exercising", measured in hours).
We will refer to these as dependent and independent variables throughout this guide.įor example, you could use linear regression to understand whether test anxiety can be predicted based on revision time (i.e., the dependent variable would be "test anxiety", measured using an anxiety index, and the independent variable would be "revision time", measured in hours). The dependent variable can also be referred to as the outcome, target or criterion variable, whilst the independent variable can also be referred to as the predictor, explanatory or regressor variable. Linear regression, also known as simple linear regression or bivariate linear regression, is used when we want to predict the value of a dependent variable based on the value of an independent variable. Stepwise: p-value, AICc, and BIC selection criterion *Linear regression using Minitab Introduction Process capability: normal, non-normal, attribute, batch * Stepwise: p-value, AICc, and BIC selection criterion Plots: residual, factorial, contour, surface, etc.
Minitab 18 predict update#
Probability and probability distribution plotsĪutomatically update graphs as data change *īrush graphs to explore points of interest *īinary, ordinal and nominal logistic regression * Sisignn ExperimentsReliability/SurvivalPower and Sample Size Process capability: normal, non-normal, attribute, batch Multivariate control charts: T2, generalized variance, MEWMA Time-weighted control charts: MA, EWMA, CUSUM Variables control charts: XBar, R, S, XBar-R, XBar-S, I, MR, I-MR, I-MR-R/S, zone, Z-MRĪttributes control charts: P, NP, C, U, Laney P’ and U’ One-sample Z-test, one- and two-sample t-tests, paired t-testĭetermine if your measurement systems are adequate, assess how well your processes meet specification limits, create sampling plans, and more. Probability and probability distribution plotĪutomatically update graphs as data changeīrush graphs to explore points of interestĪccess a complete set of statistical tools, including Descriptive Statistics, Hypothesis Tests, Confidence Intervals, and Normality Test
Minitab 18 predict series#
Scatterplots, matrix plots, boxplots, dotplots, histograms, charts, time series plots, etc. The results are presented in an easy to understand and interpret reports in graphical form and "Plain English". It helps you choose the right tool, through an interactive decision tree to pick the correct statistical tool. Minitab's Assistant guides you through your entire analysis and even helps you interpret and present your results.