Using Statistical Techniques to Analyze Data

What is the mode in the following distribution? 25, 17, 23, 23, 24, 25, 23

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____________ is a process of arranging data into a table which can be done manually or electronically using MS Excel.

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____________ are composed of graphs, bars, tables, charts, diagrams, illustrations, drawings, and maps.

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____________ when both values have the same directions (increase or decrease)

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____________ is a statistical method used for determining whether there is a linearrelationship between variables.

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____________ is an assumption about a population parameter.

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Distribution curves are best described when___.

• the tail of the distribution trails off to the left, in the direction of the lower, more negative, score values.

• the tail of the distribution trails off to the right, in the direction of the higher, more positive, score values.

• researchers draw a smooth curve instead of the series of straight lines in a frequency polygon.

• large majority of scores are concentrated in the middle of the distribution, and the scores decrease in frequency the father away from the middle.

Certain types of procedures that allow researchers to make inferences about a population based on findings from a sample best describes ___.

• descriptive statistics.

• inferential statistics.

• correlational statistics.

• cross-break.

Which of the following is an example of categorical data?

• ages of volunteers at a community service center

• zip codes of shoppers at an appliance store

• SAT scores of students who took the SAT in March

• square footage of high school gymnasiums in Nebraska

When researchers make various assumptions about the nature of the population from which the sample involved is drawn, this is a requirement of______.

• nonparametric techniques.

• the null hypothesis.

• sampling error.

• parametric techniques.