Statistics (1) WST01/01 January 2022 | Edexcel International AS Level Past Papers With Mark Scheme
Edexcel
International AS/A Level
Statistics (WST)
Jan
2022
2. Normal Distribution: Calculate probabilities for normally distributed packages, including the probability that a randomly selected package weighs less than 10 kg, and the weight of the lightest 15% of packages moved by Jemima.
3. Regression Line: Interpret the regression line in terms of the relationship between performance scores and salaries, including predicting new values and verifying reliability.
4. Normal Distribution with Changing Parameters: Solve for probabilities related to changes in mean and standard deviation of normal distributions, and find the probability that at least one of several randomly selected values is negative.
معلم موافق رایگان بودن است.
1. Stem-and-Leaf Diagram: Compute the median, interquartile range (IQR), and identify any outliers from the stem-and-leaf diagram of ages, and plot a box plot.2. Normal Distribution: Calculate probabilities for normally distributed packages, including the probability that a randomly selected package weighs less than 10 kg, and the weight of the lightest 15% of packages moved by Jemima.
3. Regression Line: Interpret the regression line in terms of the relationship between performance scores and salaries, including predicting new values and verifying reliability.
4. Normal Distribution with Changing Parameters: Solve for probabilities related to changes in mean and standard deviation of normal distributions, and find the probability that at least one of several randomly selected values is negative.
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