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Complete analyses you can explore free, no account needed — each one from problem statement to a validated, publication-ready report. Different designs, different methods.
Student Outcomes Study
This study examines student academic outcomes.
Iris Flower Measurements
This study examines the morphological measurements of iris flowers and how the sepal and petal dimensions relate to one another.
Predicting Diabetes Progression
This study examines baseline clinical measurements and how well they predict one-year disease progression in patients with diabetes.
Wine Chemical Profile
This study explores the chemical composition of wines and the latent structure underlying the measured constituents.
Anxiety Before and After a Programme
This study examines whether a stress-management programme changes participants' anxiety, comparing each participant's pre-test and post-test scores.
Reaction Time Across a Training Programme
This study examines how participants' reaction time changes over a training programme, with the same participants measured repeatedly at three sessions.
Fall Prevention on a Geriatric Ward
This nursing pilot evaluates a bedside fall-prevention protocol against standard care on an inpatient geriatric ward, examining early-window fall rates, follow-up fall-risk scores, and time-to-event (survival) analysis of days_to_first_fall over the observation period.
Onboarding Redesign A/B Test
This UX study compares two onboarding designs (variant A vs variant B) on time to first value, task completion, and self-reported satisfaction using a 5-item SUPR-Q scale, with 200 users randomly assigned across the variants.
New Product Concept Test
This consumer-research study evaluates three new product concepts (A, B, C) on purchase intent, price fairness, and a 6-item brand-fit scale, with 300 respondents randomly assigned across concepts and asked which they would buy overall.
First-Year Attrition Among New Hires
This people-analytics study follows 400 new hires from a 30-day engagement survey through 12-month exit outcomes, using time-to-event (survival) methods on months_to_exit to examine how engagement, function, and manager tenure relate to who leaves and when.
Rapid Diagnostic Test vs Standard: Paired Concordance
This diagnostic-accuracy study evaluates a new rapid test against the standard test on the same 200 patients, comparing the paired positivity outcomes to quantify concordance and disagreement between the two methods.
Radiologist Agreement on Lung-Nodule Severity
This inter-rater reliability study evaluates whether three radiologists rating 60 CT images on a continuous 0-10 nodule-severity scale produce measurements consistent enough to be pooled or used interchangeably.
Caffeine and Sleep Deprivation on Reaction Time
This 2×2 factorial experimental-psychology study evaluates how caffeine (yes/no) and sleep condition (rested/deprived) independently and jointly affect reaction time on a cognitive task, with 80 participants randomly assigned across the four cells.
Blood-Pressure Trial with Baseline Adjustment
This two-arm clinical trial compares a new antihypertensive against standard care on follow-up blood pressure at 12 weeks in 80 patients, using ANCOVA to adjust for baseline blood pressure — the modern default for continuous-outcome trials.
Reading Intervention: Pretest–Posttest Across Two Arms
This program-evaluation study compares a reading-intervention arm against a control arm across 50 students (25 per arm), each measured at pretest and posttest — a mixed ANOVA design testing whether the intervention accelerates reading gains beyond what happens in the control group.
Homework and Math Scores Across Schools
This study examines how weekly homework hours relate to students' math scores, acknowledging that students are nested within schools so any raw relationship may confound within-school effects with between-school differences.
Time to Recidivism After Release
This study examines how quickly released prisoners are re-arrested and which baseline factors — including a randomized financial-aid intervention — influence the timing of re-arrest.
Descriptive-Correlational Survey: Study Habits and Academic Performance
This study describes the study habits of college students and determines whether those habits are related to their academic performance.
Descriptive-Comparative Survey: Student Satisfaction Across Year Levels
This study describes student satisfaction with campus services and determines whether satisfaction differs across the respondents' profile.
Survey Instrument Validation: Reliability of a Student Engagement Scale
This study evaluates whether an eight-item student engagement questionnaire is internally consistent enough to be used in research.
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