2. An investor in the telecommunications industry has been provided with some questionable information in a prospectus regarding market potential in New Zealand, particularly about potentially over-optimistic statements made about the average monthly download usage for broadband connections. The investor obtains data from recent reports on usage from a variety of sources. The average monthly data usage by a household with broadband connections listed in a random sample of 12 such reports is as stated as follows, sorted by usage. Interpret the results. Average monthly data usage (GB) 100 110 120 130 140 150 160 160 170 180 190 190 Determine the first, second, and third quartiles for these data.
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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