com 297 summarizing research results data reduction and descriptive statistics

Reading: Chapter 6: Summarizing Research Results: Data Reduction and Descriptive Statistics

Lecture Notes: Under ‘Resources,’ you will find ‘Lecture Notes C,’ pp. 2-38.

Course Packet: Under ‘Resources,’ you will find ‘Course Packet,’ pp. 22-24

Assignment 7: From Book Chapter & Lecture Notes:

In s study of credibility or believability of television news versus printed news, a sample of 35 adults was selected from residents of an urban area in the Midwest. Each person was asked to express his or her opinion regarding the statement “Television news is more trustworthy than corresponding news reported in the printed media.” Responses were measured on a five-point scale from “strongly agree” (1) to “Strongly Disagree” (5), and were reported as follows:

4 4 3 5 5 3 5 2 4 1 4 1 1 4 3 1 5 2 2 2 2 4 3 1 2 5 1 5 5 4 2 4 3 4 4

Q1: Construct a frequency distribution table that corresponds to these data and draw a frequency graph of the distribution.

(1) Frequency Distribution Table

Value (x) Frequency (f) fx

(2) Frequency Distribution Graph

y

x

Q2. Calculate mean, median, mode, range, variance and standard deviation (Show your work/calculation for Standard Deviation & Variance). Round to 2 decimal places.

Mean: ____________

Median: ___________

Mode: ____________

Range: ____________

Variance: __________

Standard Deviation: ____________

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