Intro to Statistics and Integrated Physiology

Intro to Statistics and Integrated Physiology - IPHY 2800...

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IPHY 2800 SPSS Assignment 3 Due Recitation 4 The following 65 test scores from a written examination will be used as data for this assignment. This assignment is worth 24 points. .48"'" ~ ft" ~ 46- 4f A7" # -SO- .5Q-/ 39' .s-r ....M" .48-' ~ .46- .44-" ..44-- ~ ~ :l1Y 4e'" ,1lY ~ 4lr" .~ ~ ~ 44-' .. ..54- ~ 4J--' % .45""" 48""" ~ ".Ai 46- ~ Mr ~ ~ M 46- .~ ~ 46- ~ j2.- .54 .>6' ...s.Y" ~ ~ -49-" ..4a ...Ar ..44- ~ ~ .58" 48' jJJ/ 53" By hand, following the handout discussed in class, construct a frequency distribution having an interval size of one and use it to convert these scores to percentiles (2 points). (In the PR column round to whole numbers). Turn this in with your assignment and use it to answer the following questions. 1. How many students actually scored below 50 points on the exam? (l poin9 tt W 2. What percentage of 65 is your answer to question I? (1 point) 4 £e J (Q C) =-l! ,Ol t.p x.. ) DO }-l\ J I 3. What percentile score is assigned to students scoring 50 on the exam? (l point)lS ~l? \Lo- 4. Why do the answers to questions 2 and 3 differ? (lpoint) !00\L0 oj cA.11 pb t\ 1- (JJV\ do. . {)Jfj- pQ,\ (')L}J S"D l n q Ws t- ;. ( \'\1 ~ 'vuX \flA I UQ) . Now enter the data into SPSS. Call the data column testscr and label it Test Scores. 0 (\\~ ~ ~ t Remember that this is numeric data and the last column in the Variable View box ShOUld~~OU~e be labeled Scale. Go to the Data View box to enter all 65 test scores. Next, click on P e Graphs on the top menu and select Histogram. Under the Histogram screen move the 'O·e.A'Dv)'S"'D) highlighted Test Scores into the Variable box using the arrow and click OK. A frequency OfQiAh ~ ...:tt: histogram will appear, but we want to change the intervals a bit. To do this, double click
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Intro to Statistics and Integrated Physiology - IPHY 2800...

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