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Field-Discovering Statistics Using IBM SPSS 4/e (Homework)

James Finch

Statistics, section 2, Fall 2019

Instructor: Dr. Friendly

Current Score : 1 / 17

Due : Sunday, January 27, 2030 23:30 EST

Last Saved : n/a Saving...  ()

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  • Instructions

    Create your course assignments by selecting from our collection of questions written by the author himself but not found in the standard textbook. A complete, interactive eBook version of the original published text is also available.

    There are two types of questions available: Numeric and Multiple Choice. Whenever possible, values have been randomized so that each student receives a unique version of the question.

    As an added benefit, when a student answers a question correctly or incorrectly a link to the relevant reading section from the textbook is provided to guide them. For most Multiple Choice type questions, students are also provided with feedback written by the author on why their choice is correct or incorrect.

    In this assignment we present several question types written for Discovering Statistics Using IBM SPSS Statistics--North, South, Central America Version 4/e by Andy Field published by SAGE Publications Ltd.

    Click here for a list of all of the questions coded in WebAssign.

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1. –/4 points FieldStat4 1.Num.001. My Notes
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A statistics lecturer was interested in how many text messages students sent during his lectures. He borrowed a random sample of students' phones and by looking at the date/time of messages on each phone counted how many texts had been sent during his last lecture.
17, 13, 14, 16, 13, 15
(a) Compute the mean. (Round your answer to one decimal place.)


(b) Compute the median.


(c) Compute the range.


(d) Compute the mode.
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2. 1/4 points  |  Previous Answers FieldStat4 1.Num.004. My Notes
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Below is a frequency distribution of 34 customer reviews from www.amazon.co.uk of a book called Running Sucks by Jennifer Jolan.
(a) What would be our estimate of the variance in the population? (Round your answer to three decimal places.)


(b) What is the range of these data?


(c) What is the interquartile range of these data?


(d) How would you describe the frequency distribution above? (Hint: This is a bit tricky because the Amazon histogram is labelled from high to low.)
     Correct: Your answer is correct.
(see Section 1.6.1)
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3. –/3 points FieldStat4 1.Num.006. My Notes
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In a sample of 1250 clinically anxious mothers, a psychopathologist recorded the anxiety levels in their eldest child. To measure the variance in the children's anxiety scores, he computed SS = 20000 for this sample.
(a) What are the degrees of freedom for the variance?


(b) Compute the variance.


(c) Compute the standard deviation.
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4. –/1 points FieldStat4 1.MC.004. My Notes
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Which of the following best describes a confounding variable?
    
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5. –/1 points FieldStat4 1.MC.005. My Notes
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A demand characteristic is:
    
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6. –/1 points FieldStat4 1.Business.007. My Notes
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If we calculated that the correlation (i.e. the effect size) of company size and sales revenue for various organizations was r = .42, which expression would best describe this relationship?
    
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7. –/1 points FieldStat4 1.Education.003. My Notes
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Which of the following is an effective data collection tool in educational research?
    
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8. –/1 points FieldStat4 1.Health.008. My Notes
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What does the data in the chart demonstrate?


    
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9. –/1 points FieldStat4 1.SportsScience.007. My Notes
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If sport and exercise science students were asked to rank biomechanics, physiology, psychology, nutrition and research methods on a 1–5 scale, with 1 being the subject you like the most and 5 being the one you like the least, which level of measurement would it be?
    
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