Chapter 14 Com 240 Final

The College of Arts and science of Delta University has nine departments. The number of faculty in each department is shown below. What is the median number of faculty in the college of Arts and Science? 8, 12, 9, 15,17, 11, 13, 14, 7

12

Given the following age distribution, the mean is 18, 33, 7, 32, 6, 5, 4

15

Given the following age distribution, the range is 12, 15, 8, 17, 34, 43, 2, 16, 43, 3

2, 43

Given a mean of 12 and a standard deviation of 2, we can conclude:

68 percent of cases are between 10 and 14

Which of the following statements about data entry is FALSE?

All of these choices are TRUE

A codebook contains the following information. Which of the following statements

All of these choices are true

You are helping code one of your professors data. You are coding occupation and notice there is no code for a respondent's indicated occupation. Which of the following statements would not be incorrect in relating the problem to the professor?

All of these choices would be correct statements

A univariate analysis examines the distribution of cases on one or more variables

FALSE

Bivariate and multivariate analyses use dependent variables to explain independent variables.

FALSE

Coding should always begin with a relatively well-developed coding scheme derived from your research purpose

FALSE

Frequency distributions indicate the number of times that variables are observed.

FALSE

In multivariate analysis a second dependent variable is added.

FALSE

Quantitative data coding is always a simple and straightforward process

FALSE

Quantitative research with a single researcher need not construct a codebook.

FALSE

The "don't know" category should always be excluded from analysis

FALSE

Ultimately, there is only one way to properly code a variable.

FALSE

When coding and analyzing data, you always want to have your numbers as specific as possible.

FALSE

A friend showed you the following table: what guideline in table construction does this table violate?

None of these guidelines are violated in the table

A bivariate table is read by comparing the independent variable subgroups with one another in terms of a given attribute of the dependent variable

TRUE

A codebook is a guide for locating variables and interpreting codes in one's data file.

TRUE

A nominal variable is a discrete variable

TRUE

Always include the number of cases omitted from a bivariate analysis because of missing data in the table

TRUE

Bivariate and multivariate analyses are aimed primarily at explanation

TRUE

The mean is a particularly useful statistic when there is great disparity in a distribution

TRUE

When analyzing quantitative data, you can increase the detail of a variable collected at a more general level via coding.

TRUE

Whereas univariate analysis and subgroup comparisons focus on the descriptions of the people under study, the focus of bivariate analysis is on the relationships among the variables themselves.

TRUE

A codebook contains the following information: Following this codebook, an individual assigned the number 283921

a female participant residing in New York

An example of multivariate analysis would be

an analysis of the relationship between age, sex, and type of nightspot frequented in a given city in the Midwest.

Marco wants to conduct a research study to determine if students living on campus feel more or less safe than those who live off campus. At the most basic level, he should use

bivariate analysis

Contingency tables can be used to present and describe

bivariate and multivariate relationships

Certain guidelines should be kept in mind when coding. Among these is (are) the following:

code categories should be both mutually exclusive and exhaustive

Looking at your data and frequency distribution, you find that a variable labeled LEVEL has only whole number values between 1 and 5. You can conclude then that the variable is a(n):

discrete variable

Subgroup comparisons are done by

dividing cases into the appropriate subgroups, describing each subgroup in terms of a given variable, and comparing those descriptions across subgroups.

A description of the number of times that the various attributes of a variable are observed is called a:

frequency distribution

A measure of dispersion describes

how spread the data are around some central value

In reading a table that someone else has constructed, the rule of thumb is

if the table is percentage down, read across, and if the table is percentaged across, read down.

When summarizing heavily skewed data, the best measure of central tendency is:

median

A friend of your assigned a code of 1 to "male" and code of 2 to "female" on the variable sex. Your friend asked the computer to compute the average score on sex. The computer printout contained the following information: mean 1.38, standard deviation = central tendency to report is (are) the

mode

The most frequent attribute, in either grouped or ungrouped data, is the

mode

Which of the following is (are) aimed primarily at explanation?

only multivariate and bivariate analyses are aimed at explanation

Which of the following statistics can be calculated on continuous data?

standard deviation

The end product of the coding process in quantitative analysis refers to

the conversion of data items into numerical codes

In a perfect normal distribution:

the mean, median, and mode are all equal

which of the following measures of central tendency can be used at any level of measurement?

the mean, the mode and the median

Professor Wilton decided to test whether blondes have more fun. Wilton surveyed 600 people and obtained the following results: The Best way(s) to percentage this table is (are)

within columns, down