Show work for EVERY problem. Show work for multiple choice by explaining why you chose that answer. Points a through showing your work and answers. Answors without work shown or explanations will not receive credit. 1) The frequency distribution below summarizes employee years of service for Alpha Corporation. Determ width of each class. (Hint: We do not know the range here so we cant use a formula to find the class How can we detormine it by just looking at the table?) o classes width u-1 Years of service Frequency 1-5 6-10 20 11-15 25 16-20 10 21-25 26-30 3 onstruct the cumulative frequency distribution that corresponds to the given frequency distribution. 2) Number Weight (oz) of Stones 1.2-1.6 1.7-2.1 : 5+a7 22-2.6 12 +5 525 chans
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
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