# com 297 summarizing research results data reduction and descriptive statistics

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

Lecture Notes: Under â€˜Resources,â€™ you will find â€˜Lecture Notes C,â€™ pp. 2-38.

Course Packet: Under â€˜Resources,â€™ you will find â€˜Course Packet,â€™ 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 â€œTelevision news is more trustworthy than corresponding news reported in the printed media.â€ Responses were measured on a five-point scale from â€œstrongly agreeâ€ (1) to â€œStrongly Disagreeâ€ (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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