Exam 15: Basic Data Analysis: Descriptive Statistics

For purposes of comparison, we can convert the frequency distribution by dividing the frequency of each value by the total number of observations, which results in the:

Data entry requires the researcher to first undertake an operation called data coding.

Which term refers to any statistical measure used that somehow reflects a typical or frequent response?

When SPSS produces a frequency distribution, how does it report missing values that come from respondents who do not answer the question being analyzed?

Regression analysis, or times series analysis, are used for predictive analysis in marketing research.

In the formula for calculating the standard deviation, the differences between each observation and the mean is squared. If we did not square these differences, the standard deviation would:

The FactFinder Research firm conducted a survey for a national food manufacturer, and one of the issues addressed by the research was to determine how many pounds of fish were consumed per capita annually. In the survey they found one person who consumed only one pound of fish per year, while 10 people reported 200 pounds per year. The range was:

Assume you have ratio data that are answers to a question concerning an appropriate price for a service. You have 10,000 respondents you have interviewed and you want to generate a mean for this question. Which of the following command sequences in SPSS would allow you to generate a mean?

If two values are tied for the most frequent values in a dataset, the distribution is said to be:

Descriptive analysis relies primarily on measures of central tendency and variability.

Which of the following best describes a data matrix?

Assume a college professor wanted to know if the number of hours studied by her students was related to students' test scores. She would use:

Through the process of data summarization, the researcher describes the data matrix by computing a small number of measures that characterize the dataset.

Frequency distributions, standard deviation, and the range are all measures of variability.

You can download the Advanced Automobile Concepts data file from the Internet.

George Hubbard has nearly completed designing a survey for a political candidate. Not only is the candidate interested in knowing how constituents in her state feel about certain issues, but she is interested in knowing if attitudes toward these issues differ by demographic subgroups. One of the demographic questions George has added to the survey is religious preference. He asked this question in a way that respondents would indicate their preference by checking a blank box alongside the name of several possible religious affiliations such as "Catholic," "Methodist," "Muslim," and so on. George knows that he should anticipate how he is going to analyze the data before he completes the survey questions. As he looks at the religious preference question, he knows that because it's measurement level is ________, he should use a ________ to report the central tendency and a ________ to report variability.

Analysis that investigates differences between groups using statistical concepts, such as t tests and analysis of variance, is referred to as "differences" analysis.

In the following data set, what is the mean? 12, 0, 0, 1, 1, 1, 6, 10, 11

If we square the standard deviation, we have variance.

If a marketing manager were to need a statistical analysis to make a forecast or prediction, he or she would most likely use: