Exam 7: Quantitative Data Preparation and Descriptive Statistics

Inferential statistics are used describe the characteristics of data.

The codebook typically includes a description of the variable and the answers for each respondent.

If you have a level of measurement in which the distance between the values are meaningful but there is no absolute value of zero, then what level of measurement is being utilized?

The mean is the arithmetic average of the variable of interest and is sensitive to extreme scores.

A variable with a large standard deviation, greater than a normal curve, will typically have a shape described as ___________________.

The _________________ represents the value that occurs most frequently.

You are examining a frequency polygon with the majority of its data in the middle ranges, the remaining data sloping down from the middle, and which has no skew. This distribution would be described as __________________.

______________, typically shown as the rows in a program, represent the individual responses to the data collection.

With a ________________ level of measurement, the numbers assigned to different attributes are arbitrary.

Mean is a measure of ________________, while range is a measure of _______________.

_________________ is the square root of the variance which provides the average deviance of the values from the mean in the same unit as the original data.

A ________________ provides a visual spread of the data based on percentile points.

You are analyzing the distribution of income in your city. You notice that there are a few extreme cases where income is very high. These cases may skew your distribution in which direction?

Age, reported by year, is an example of a ratio variable.

A question that asks respondents to rank three different departments is using a(n) ________________ level of measurement.

If you describe a variable as categorical, you are referring to its ______________, which is a description of how values are assigned to the attribute.

Variance is calculated as, sum of squared deviance/(n-1)

Mean, median and mode are all measures of central tendency.