Chapter 1 Assignment Identify each of the following as discrete or continuous

Chapter 1 Assignment

1. Identify each of the following as discrete or continuous.

   1. Body weight (lbs)

   2. Religious identity (1 = Protestant, 2 = Catholic, 3 = Muslim, 4 = Jewish, 5 = Atheist, 6 = Buddhist, 7 = Hindu, 8 = Other)

   3. Final grades for a course (A, B, C, D, or F)

   4. Number of gallons in a pool

   5. Annual income

   6. Political party (Democrat, Republican, Independent, Other)

   7. Restaurant ratings on a scale of 1 to 5 stars

   8. Brand names of shoes in a consumer survey

1. Identify each of the following as quantitative (interval or ratio) or qualitative (ordinal or nominal).

   1. Body weight (lbs)

   2. Religious identity (1 = Protestant, 2 = Catholic, 3 = Muslim, 4 = Jewish, 5 = Atheist, 6 = Buddhist, 7 = Hindu, 8 = Other)

   3. Final grades for a course (A, B, C, D, or F)

   4. Number of gallons in a pool

   5. Annual income

   6. Political party (Democrat, Republican, Independent, Other)

   7. Restaurant ratings on a scale of 1 to 5 stars

   8. Brand names of shoes in a consumer survey

1. Identify the level of measurement for each of the following variables.

   1. The weights of college textbooks

   2. The genre of movie (romance, thriller, comedy, etc)

   3. Body temperature in Fahrenheit of all the students in our class

   4. Classification of cars by size as subcompact, compact, intermediate, full size

   5. Social Security Numbers

   6. Distance traveled to get to campus

1. Create a variable age that is measured on the ratio scale (make sure to be specific in how you operationally define age).

1. Create a variable age that is measured on the ordinal scale.

1. Identify the level of measurement of each of the following variables

   1. Marital status (single, married, divorced, widowed)

   2. Political affiliation (democrat, republican, independent)

   3. Time to identify the stimulus

   4. Years of education

   5. Type of feedback (very unsatisfied, unsatisfied, neutral, satisfied, very satisfied)

1. Identify the levels of the IV for each of the following

   1. Marital status (single, married, divorced, widowed)

   2. Political affiliation (democrat, republican, independent)

   3. Time to identify the stimulus

   4. Years of education

   5. Type of feedback (very unsatisfied, unsatisfied, neutral, satisfied, very satisfied)

1. Identify each of the following as a true IV or a quasi IV

   1. Marital status (single, married, divorced, widowed)

   2. Political affiliation (democrat, republican, independent)

   3. Time to identify the stimulus

   4. Years of education

   5. Type of feedback (very unsatisfied, unsatisfied, neutral, satisfied, very satisfied)

1. Identify each of the following as an experiment or not an experiment.

   1. What is the mean income of nurses?

   2. Do seat belts save lives?

   3. Can lifting weights improve runner’s times in a 10K race?

1. Find each of the following:

1. Find each of the following:

1. The following dataset is made up of the following variables:

• LName = the last name of the person

• FName = the first name of the person

• YrSchool = the year in college (Freshman, Sophomore, Junior, Senior)

• GPA = Grade Point Average

• HSAve = High School Average

1. 1. What is the level of measurement of the variable LName?

   2. How many levels make up the variable YrSchool?

   3. List the levels of the variable YrSchool.

   4. List the quantitative variables (if any).

   5. List the ordinal variables (if any).

1. Identify the following as true or false:

   1. Discrete data can take on any value within an interval

   2. Graphs, figures, and summary statistics are applications of inferential statistics

   3. Descriptive statistics can be used to describe populations and samples of data

1. In the following situations, identify the independent and dependent variables and state the level of measurement for each.

   1. You have been hired by the MTA to figure out if commuter satisfaction rates (on a scale of 1 to 10) are higher on the number trains (ex: 1, 2, 3) or letter trains (ex: N, Q, R).

   2. A researcher wants to know if owning a pet leads to a decrease in stress. She administers a stress to 100 people who own pets and 100 people who do not own pets. The scores on the stress test (ranging from 0 to 40) are then evaluated to determine which group is more stressed out.

   3. A recent psychology study tested whether or not the presence of humor could aid memory in older adults. Participants were broken up into two groups: one group watched a funny video before taking a memory test and the other group did not. The scores on the memory test were higher for the group that watched the funny video.

1. X = 3, 5, 7, 8

a. Find ΣX

b. Find ΣX2

c. Find Σ2X+1

d. Find Σ(2X+1)