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WorksheetsStatistical Decision Making
Total questions: 30
Worksheet time: 15mins
A researcher tests whether exam performance differs by gender and type of study strategy used (i.e., group vs. self-study), and whether there is an interaction.
Researchers compare stress means between smokers and non-smokers.
A university's admission committee wants to determine whether the average MDCAT score in the year 2025's admission test differs from the previous average of 120.
A psychologist predicts depression from stress, coping, and social support.
A researcher compares mean aggression scores among children exposed to none, low, or high levels of violent video games.
A study compares the average memory test performance among four age groups: children, young adults, middle-aged, and elderly.
A team of psychologists examines whether alumni's employment (how long it takes for graduates to secure a job after degree) can be predicted using academic integrity, GPA, statistics course grades, and how many societies they had joined in student years.
Sindh Higher Education Commission (S-HEC) compares critical thinking ability (measured through a standaridized test) across seven universities of Karachi: DOW, MAJU, Bahria, KU, Federal, NUML, and ZU.
A university wants to know whether gender is related to whether students passed or failed a compulsory statistics course. Data were collected from 300 students, recording their gender and final course outcome.
Binary logistic regression
Chi-square test of independence
Independent Samples t-test
Spearman Correlation
A researcher examines whether students’ attendance percentage predicts whether they submit the final project on time or late. Attendance was recorded as a numerical percentage for each student.
Chi-square test of independence
Simple linear regression
Binary logistic regression
Paired samples t-test
An academic advisor wants to test whether department (Psychology, Business, Engineering) is associated with students’ decision to continue or drop out after the first semester.
Multinomial logistic regression
Chi-square test of independence
One-way ANOVA
Multiple linear regression
A researcher wants to predict whether students qualify for a merit scholarship (yes/no) based on their GPA, study hours per week, and class attendance.
Multiple linear regression
Chi-square test of independence
Binary logistic regression
Two-Way ANOVA
A researcher studies whether self-efficacy score predicts exam pass/fail status, and whether this relationship differs for male and female students.
Chi-square test of independence
Binary logistic regression
Simple Mediation
Independent Samples t-test
