A market research company asked 9 people to evaluate a brand of tablet computer, Brand A, using a questionnaire. The questionnaire scores are given in TABLE 1. TABLE 1 Brand A 8.00 8.02 8.02 8.04. 8.04 8.04 8.07 8.10. 8.11 Another brand of tablet computer, Brand B, was evaluated and given scores with the information as seen in TABLE 2. TABLE 2 Information. Brand B. Minimum (min) 8.04 First Quartile (Q1) 8.06 Median (Q2) 8.07 Third Quartile (Q3) 8.08 Maximum (max) 8.10 a) Construct a boxplot for scores of Brand A and label it accordingly. b) Determine the interquartile range (IQR) for both brands. c) According to the IQRs in (b), which brand's scores were more varied in the evaluation? Why?
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.
A market research company asked 9 people to evaluate a brand of tablet computer, Brand A, using
a questionnaire. The questionnaire scores are given in TABLE 1.
TABLE 1
Brand A 8.00 8.02 8.02 8.04. 8.04 8.04 8.07 8.10. 8.11
Another brand of tablet computer, Brand B, was evaluated and given scores with the information
as seen in TABLE 2.
TABLE 2
Information. Brand B.
Minimum (min) 8.04
First
Median (Q2) 8.07
Third Quartile (Q3) 8.08
Maximum (max) 8.10
a) Construct a boxplot for scores of Brand A and label it accordingly.
b) Determine the
c) According to the IQRs in (b), which brand's scores were more varied in the evaluation? Why?
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