Use Excel to develop a regression model for the Consumer Food Database (using the “Excel Databases.xls” file on Blackboard) to predict Annual Food Spending by Annual Household Income.  Which observations, if any, are considered to be outliers in this dataset?  (i.e. outside 3 se)  Select all that apply.   There are no outliers in this dataset     Observation 3     Observation 127     Observation 151

Body Fat. Where we considered the regression of percentage of body fat on nine body measurements: height, weight, hip, forearm, neck, wrist, triceps, scapula, and sup. Describe and discuss problems that could have arisen in the collection of the data for this regression analysis.

Citi Bike is a privately owned public bicycle sharing system in New York City that has become increasingly more popular in the past few years. Citi Bike is designed to provide an alternative version of public transportation. Trips taken on daily or 3-day passes are limited to 30 minutes before extra fees are charged. The following data indicate the trip times in minutes for a single Citi Bike in a daily period. (a) Create a stem-and-leaf plot for the data. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) 12 stems: ones leaves: tenths 1213 12.3 minutes 13 Stem Leaves 14 15 16 17 18 19 20 21 22 23 18.2 24 16.7 16.2 18.2 12.3 20.1 25.5 19.0 19.4 16.9 25 25.2 23.8 22.2 25.4 21.3 26.2 18.6 25.9 26.0 24.9 26 (b) Which trip time (in minutes) could be considered a possible outlier in the data? min

Only data that shows positive trends can be graphed in a scatter diagram. True O False