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Exploratory Data Analysis.a. Perform Exploratory Data Analysis on all variables in the data set. Because you are going to focus on Extroversion and Agreeableness, be sure to include scatterplots for these combinations of variables (Student Agreeableness/Lecture Agreeableness; Student Extroversion/Lecture Extroversion; Student Agreeableness/Lecture Extroversion; Student Extroversion/Lecture Agreeableness) and include the regression line within the chart.b. Compose a one to two paragraph write up of the data. c. Create an APA style table that presents descriptive statistics for the sample.2. Make a decision about the missing data. How are you going to handle it and why?3. Correlation. Perform a correlational analysis on the following variables: Student Extroversion, Lecture Extroversion, Student Agreeableness, Lecture Agreeableness.a. Ensure you handle missing data as you decided above.b. State if you are using a one or two-tailed test and why.c. Write up the results in APA style and interpret them.
Thirty homes responded, and the sample mean water use per day was 77 gallons with a standard deviation of 9.0 gallons per day.
A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.
For a sample of 20 stations last Tuesday the correlation was .78. At the .01 significance level is the correlation in the population greater than 0? t= .78-20.00/.01SQRT 20=?
Planning Investments. Your uncle has $90,000 that he wishes to invest now in order to use the accumulation for purchasing a retirement annuity in five years. After consulting with his financial adviser, he has been offered four types of fixed income ..
The average time it took then to change a water pump was 18 minutes. The standard deviation of the sample was 3 minutes. Find the 99% confidence interval of the true mean.
A sample of parts provided the following contingency table data on part quality by production shift. Use α =.05 to determine whether part quality is independent of the production shift. What is your conclusion?
The average range found over these samples is 0.15 gallons. What is the upper control limit for the averages in this process?
Create a histogram over five class intervals.
A group of teenagers were monitored closely over the period of several weeks to measure how frequently they watched violent television programs.
No information is available about its value. How large a sample size is needed to estimate it to within 0.15 with 99% confidence?
They would like the margin of error of the 95% confidence interval for the proportion to be 0.05 or less. Use the guessed value p = 0.25 to find the required sample size.
Explain briefly why ANOVA was the appropriate analysis for these data and finish the ANOVA table giving the F-statistic, degrees of freedom, and approximating the p-value. Show your work. What is your conclusion about the flavor quality of the differ..
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