_HW2.docx

# _HW2.docx - PSYC 354 HOMEWORK 2 Frequency Tables and Graphs...

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PSYC 354 H OMEWORK 2 Frequency Tables and Graphs When submitting this file, be sure the filename includes your full name, course and section. Example: HW2_JohnDoe_354B01 Be sure you have reviewed this module/week’s lessons and presentations along with the practice data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Part I: Concepts Answer all questions in the spaces provided. 1) The following table depicts exam scores for a group of 65 students. Use the information in the table to determine the percentages for each interval and the total frequency and percentage. Fill these into the blank boxes in the table. Depending on your rounding decisions, these may or may not add up to exactly 100% but should be very close. Table: Grouped Frequency Table Score Interval Frequency Percentages for each Interval 90-100 11 17 80-89 22 34 70-79 17 26 60-69 7 11 50-59 6 9 40-49 1 1 30-39 1 1 TOTAL 65 100% 2) Scores that have not yet been transformed or analyzed are _raw__________ scores. 3) _histogram_______ look like bar graphs but typically display scale data. 4) A frequency distribution that is bell-shaped, symmetrical, and unimodal is _normal distribution__________ . 5) A frequency distribution of ages of residents at an assisted living facility for the elderly is clustered around 82 with a long tail to the left. This distribution is __negatively__________ - skewed. 6) When a constraint prevents a variable from taking on values above a certain point, this is known as a(n) __floor______ effect. 7) A _scatterplot________ depicts the relationship between two scale variables using dots. 8) When graphing a nominal independent variable and a scale dependent variable, you could use a __bar- graph______ or a _pictoral graph________. Page 1 of 10

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PSYC 354 9) A line graph depicts the relationship between two __scale_______ variables. 10) Do the data in the scatterplot below show a linear relation, non-linear relation, or no relation at all? 0
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