Statistics 9ST0/03 June 2022 | Edexcel A Level Past Papers With Mark Scheme

Edexcel A Level Statistics (9ST0) Jun 2022

معلم موافق رایگان بودن است.

1. Randomised controlled experiment on video game impact in balance therapy, box plot analysis of balance improvements across timepoints (T0, T1, T2), control group identification, discussion on visualization choice (box-and-whisker plots)

2. Uniform distribution modeling of production time, calculation of mean, conditional probability before and after shift break, use of cumulative and conditional probabilities for truncated intervals

3. Confidence interval and hypothesis testing for food consumption by children (salad and cauliflower), paired sample comparisons, variance equality assessment, impact of small sample size on statistical power and precision

4. Poisson distribution modeling of wind turbine failures, standard deviation and failure probability calculations, exponential model for time between failures, estimation of rate parameter λ, critique of model assumptions (constant rate, independence, homogeneous turbines)

5. Histogram interpretation of film lengths, visual symmetry and skewness, χ² goodness-of-fit test for normality using grouped data, adjustment for expected frequency threshold, hypothesis testing and conclusion on normality assumption

6. Binomial sign test on combat sports outcome by color (red vs blue), paired t-test for football team performance in red kits, critical evaluation of sample size, test assumptions, and generalizability, practical implications for using color as a performance strategy