6.(18 pts) A researcher who is interested in the effect of price on perceived qu
ID: 3446554 • Letter: 6
Question
6.(18 pts) A researcher who is interested in the effect of price on perceived quality gives a group of 50 students sneakers which are described to them as "expensive", while another group of 50 students receives the very same sneakers which are described to them as "discount." The students are then to rate the perceived quality of the sneakers on a scale using only one of the following values (0 poor quality, 1-satisfactory quality, 2 good quality, 3-very good quality, 4 superior quality) to see if there is a difference based on price description. A) What is the independent variable? B) What is the dependent variable? C) Is the dependent variable discrete or continuous? D) What scale of measurement (nominal, ordinal, interval or ratio) is used to measure the dependent variable? E) What research method is being used (experimental or observational), and why? F) If, instead of measuring the perceived quality of shoes, the researcher decides to measure the distance each individual can jump off of the ground (in centimeters), which of the above answers changes? And what is/ are the new answer s)? 7.(16 pts) The first exam grades of last semester's Stats class had a mean of 67 with a a. Jenny received a score of 80. What is her z-score? Is it positive or negative? b. Michael's z-score was a -1.5. Did he do better or worse than the average? How c. Anne's z-score was a 0. What does this tell you about her score in relation to the d. John received a score of 65. What is his z-score? Is it positive or negative? standard deviation of 5 points. Answer the following questions: Why? can you tell? And by how many points? mean? Why? For the students in the first part of this question (Jenny, Michael, Anne, and John): e, which (if any) students fall into the middle 68% of the distribution? which (if any) students fall outside of the middle 68% of the distribution? g, which (if any) students fall into the top 5% of the distribution? e, h. Which (ifany) students fall into the bottom 5% of the distribution? 8. (10 pts) SPSS: For the following data: x-13, 4, 7, 6, 5, 1. 4,3,4, 4, 5,4,0,3,5,4,4,4 a. Use SPSS to find the Mean, Median, Mode and Standard Deviation. Paste your b. Construct a frequency histogram of this data, with a discrete x-axis that starts at c. Describe the distribution (modes, skew, etc) and indicate how the relationship d. Using SPSS, convert each score in this distribution into a z-score. Then output: 0 and ends with 7, Paste below between the mean and median also reflects the observation you have made construct a frequency histogram of the z-scores (x-axis should span from -3 to 2, because you should not have any zscore values outside of this range). Paste below e. Describe the similarities between the raw-score histogram you created and the z- score histogram. What are the differences, if there are any? 9.(4 pts) SPSS: For the following set of January 2014 temperature (in Fahrenheit) data X-26, 45, 31, 28, 52, 7, 40, 342 Find the mean, median, mode, range, standard deviation, and variance in SPSS. Paste below ONE table which contains all of the above statistics. Indicate the steps you took to construct this table.Explanation / Answer
6. A. The independent variable is Price.
B. The dependent variable is Perceived Quality.
C. The dependent variable is continuous as it measured on a scale from 1 to 4.
D. The interval scale is being used to measure the dependent variable.
E. This is an experimental method because clearly an attempt to establish a cause and effect relationship between two variables is being made.
F. In this case, the dependent variable would change to JUMP distance and the scale to measure it would be ratio.
Please post the other questions separately.
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