Descriptive Statistic

ANSWER QUESTION  MUST PROVIDE SOURCES AND COMPLETE THE ATTACHED HOMEWORK The professor teaching a large introductory class gives a final exam that has alternate forms, A, B, and C. A student taking the exam using Form B is upset because she claims that Form B is much harder than Forms A and C. Discuss how percentile point data might be useful to determine if the student is correct. PSY-520 Graduate Statistics Topic 1 – Descriptive Statistics Project   Directions: Use the following information to complete the questions below. While APA format is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.   A researcher was interested in the anxiety present in students just prior to the midterm exam. The researcher used an anxiety self-quiz to gauge the student’s anxiety. The score for 30 students are given here.  69 99 91 66 70 98 70 53 40 58 61 66 94 77 70 56 88 85 86 40 84 86 54 48 86 43 78 53 79 89   1.     Construct a frequency table with class, frequency, relative percent, and cumulative percent that has 6 classes to describe the distribution of the data in SPSS.    2.     Use the frequency table to construct a histogram in SPSS.      3.     Use SPSS to calculate the numerical descriptive statistics mean, median, standard deviation, and variance of the anxiety scores.    4.  The following table shows distributions of bachelor’s degrees earned in 2011–2012 for selected fields of study by all male graduates and by all female graduates. Bachelors Degrees Earned in 2011-2012 by selected field of study and gender ( in 1000) Major                           Males                Females Business                       190.0                   176.7 Social Science               90.6                      87.9 Education                       21.8                   84.0 Health Science               24.9                     138.6 Psychology                        25.4                      83.6 Engineering                     81.3                       17.3 Life Science                       39.5                      56.3 Fine arts                              37.2                  58.6 Communication                33.5                     55.2 Computer science                38.8                 8.6 English                                  17.0                36.8                                  TOTAL 600.0            803.6 (A) How many female psychology majors graduated in 2011–2012? (B) Since the total numbers of male and female graduates are fairly different—600.0 thousand and 803.6 thousand—it is helpful to convert first to relative frequencies before making comparisons between male and female graduates. Then, inspect these relative frequencies and note what appear to be the most conspicuous differences between male and female graduates. (C) Would it be meaningful to cumulate the frequencies in either of these frequency distributions? (D) Using just one graph, construct bar graphs for all male graduates and for all female graduates. Hint: Alternate shaded and unshaded bars for males and females, respectively.

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