midterm 1 review packet(1)

Spring 2023 - Statistical Methods Midterm 1 Review Problem 1. Pet Owner (W) Job Salary (X) Stress Level (Y) Body Fat % (Z) Alexa Yes 200,000 100 65 Bobby No 125,000 85 55 Hank No 55,000 60 24 Veronica Yes 165,000 40 39 Roberto Yes 75,000 90 20 Find the following: a) w 2 = b) y 4 = c) x 5 = d) Circle the correct answer: 65 = w 1 y 3 z 4 z 1 Problem 2. Below are the descriptions of different types of variables In the blank beside each description, write whether the type of variable being described is continuous, discrete, ordinal, categorical, or dichotomous ___________________________ Numeric values that are whole numbers only ___________________________ Number of brothers and sisters ___________________________ Two or more distinct categories ___________________________ Height, Weight, Age ___________________________ Values that indicate rank or order ___________________________ Survival Outcome (Yes, No) ___________________________ Place of residence (Texas, California, Colorado) ___________________________ Numeric values that have an infinite number of possible values ___________________________ Variable with only two categories ___________________________ Position in a race (1 st , 2 nd , 3 rd )

Problem 3. The frequency table below shows the number of Congressional seats in each state in the United States. Fill out all blank white cells in the table. Round your answers to the second decimal place if needed. No. of Seats in the US House of Representative Width of Interval Frequency (# of states) Percent in interval (Area) Density (% per unit) Height 0-3 15 3-10 23 10-20 8 20-60 4 TOTAL Use the data in the frequency table to construct a Density Histogram.