a1_mahagajenn.pdf - Assignment One STAT 193 Jenny Mahaganti...

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Assignment One STAT 193 Jenny Mahaganti 300496776 1. a. Look at the dataset and the variable descriptions given above Fisherman – Categorical, nominal Age – Numerical, continuous Restime – Numerical, discrete Height - Numerical, continuous Weight - Numerical, continuous Fishmlwk – Numerical, discrete Fishpart – Categorical, nominal MeHg – Numerical, continuous TotHg - Numerical, continuous b. Using Excel, calculate the mean, standard deviation, median, lower quartile, upper quartile and IQR for the variable weight. Give your answers to one decimal place if they need rounding. Briefly explain what each of the LQ, UQ and IQR tell us about the weights of those surveyed.
Assignment One STAT 193 Jenny Mahaganti 300496776 c. Calculate the 90th percentile for the variable weight. What does this number tell you about the weights of the survey respondents?
d. Create a histogram for the variable TotHg. Edit the histogram so that it has 10 bins and format the horizontal axis to 2 decimal places. How many individuals appear to be in the highest class interval (on the right)? Comment on the main features of the histogram.
e. Based on your histogram in part 1d above, would the mean be an appropriate measure of central location for total mercury? If not, state an appropriate alternative and justify your answer briefly.

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