Virginia: Probability and Statistics Math Standards

89 standards · 4 domains

DATA IN CONTEXT

PS.DC.1.a Define the stages of the statistical cycle and how each stage relates to the others.
PS.DC.1.b Formulate questions and conclusions based on context.
PS.DC.1.c Understand the type of data relevant to the question at hand (e.g., quantitative versus categorical).
PS.DC.1.d Compare and contrast population and sample, and parameter and statistic.
PS.DC.1.e Identify and explain constraints of the statistical approach.
PS.DC.2.a Investigate and describe sampling techniques (e.g., simple random sampling, stratified sampling, systematic sampling, cluster sampling).
PS.DC.2.b Determine which sampling technique is best, given a particular context.
PS.DC.2.c Investigate and explain biased influences inherent within sampling methods and various forms of response bias.
PS.DC.2.d Use the statistical cycle to plan and conduct an observational study to answer a question or address a problem.
PS.DC.3.a.i treatment/control groups;
PS.DC.3.a.ii blinding/placebo effects;
PS.DC.3.a.iii experimental units/subjects; and
PS.DC.3.a.iv blocking/matched pairs and completely randomized designs.
PS.DC.3.b Evaluate the principles of experimental design to address comparison, randomization, replication, and control within the context of the problem.
PS.DC.3.c Compare and contrast controlled experiments and observational studies and the conclusions that may be drawn from each.
PS.DC.3.d Use the statistical cycle to plan and conduct a well-designed experiment to answer a question or address a problem.
PS.DC.3.e Select a data collection method appropriate for a given context.

DESCRIPTIVE STATISTICS

PS.DS.1.a Create and interpret graphical displays of data, including dot plots, stemplots, boxplots, cumulative frequency graphs, and histograms, using appropriate technology.
PS.DS.1.b.i shape;
PS.DS.1.b.ii measures of center;
PS.DS.1.b.iii spread; and
PS.DS.1.b.iv unusual features of the data (e.g., outliers, clusters, gaps).
PS.DS.2.a Interpret measures of central tendency: mean, median, and mode.
PS.DS.2.b Interpret measures of spread: range, interquartile range, variance, and standard deviation.
PS.DS.2.c Identify possible outliers, using an algorithm.
PS.DS.2.d Investigate and explain the influence of outliers on a univariate data set.
PS.DS.2.e Investigate and explain ways in which standard deviation addresses variability by examining the formula for standard deviation.
PS.DS.3.a Create graphical displays of data, including back-to-back stemplots, parallel dot plots, parallel boxplots, and histograms, using appropriate technology.
PS.DS.3.b.i shape;
PS.DS.3.b.ii measures of center;
PS.DS.3.b.iii measures of spread; and
PS.DS.3.b.iv unusual features of the data (e.g., clusters, gaps, outliers).
PS.DS.4.a Create and interpret graphical displays of univariate categorical data, including bar graphs within the context of the problem, using appropriate technology.
PS.DS.4.b Create and interpret graphical displays comparing distributions of two or more univariate categorical data sets including segmented and side-by-side bar graphs within the context of the problem, using appropriate technology.
PS.DS.4.c Generate and interpret a two-way table as a summary of the information obtained from two categorical variables.
PS.DS.4.d Calculate and interpret marginal, relative, and conditional frequencies to analyze data in a two-way table within the context of a problem.
PS.DS.5.a Create scatterplots, using appropriate technology.
PS.DS.5.b.i the form of relationship for linear and nonlinear trends;
PS.DS.5.b.ii the direction of the relationship for positive, negative, or no association;
PS.DS.5.b.iii the strength of the relationship such as strong, moderate, or weak; and
PS.DS.5.b.iv the presence of unusual features within the data (e.g., clusters, gaps, influential points, outliers).
PS.DS.6.a Create the least squares regression model using technology to interpret the contextual meaning of the slope and 𝑦-intercept.
PS.DS.6.b Using technology, calculate and interpret the correlation coefficient, 𝑟, within the context of a problem.
PS.DS.6.c Using technology, calculate and interpret the coefficient of determination, 𝑟², within the context of a problem.
PS.DS.6.d Use regression lines to make predictions, and identify the limitations of the predictions, such as extrapolation.
PS.DS.6.e Calculate and interpret a residual to understand the error of a prediction.
PS.DS.6.f Using technology, calculate and interpret the standard deviation of the residuals, 𝑠.

INFERENTIAL STATISTICS

PS.IS.1.a Describe the shape, center, and spread of the sampling distribution of a proportion within the context of a problem.
PS.IS.1.b.i identify the basic conditions for inference: random sample, independence, and normality;
PS.IS.1.b.ii calculate a confidence interval using technology; and
PS.IS.1.b.iii interpret the interval within the context of the problem.
PS.IS.1.c Explain how changes in confidence level and sample size affect width of the confidence interval and margin of error.
PS.IS.1.d Calculate and interpret a point estimate and margin of error of a confidence interval for a proportion within the context of the problem.
PS.IS.1.e Explain how and why the hypothesis testing procedure allows one to reach a statistical decision.
PS.IS.1.f.i construct appropriate null and alternate hypotheses;
PS.IS.1.f.ii identify the basic conditions for inference: random sample; independence, and normality;
PS.IS.1.f.iii calculate and interpret the 𝑝-value using technology;
PS.IS.1.f.iv determine and justify whether to reject the null hypothesis; and
PS.IS.1.f.v interpret the results within the context of the problem.
PS.IS.1.g Use the statistical cycle to plan and conduct a statistical study about a proportion to answer a question or address a problem with inference.
PS.IS.2.a Describe the shape, center, and spread of the sampling distribution of a mean within the context of a problem.
PS.IS.2.b Calculate and interpret a point estimate and a margin of error for a confidence interval of a mean within the context of a problem.
PS.IS.2.c Describe the use of the Central Limit Theorem in satisfying the assumptions and conditions for inference about a mean.
PS.IS.2.d Identify the properties of a 𝑡 distribution.
PS.IS.2.e.i identify the basic conditions for inference: random sample, independence, and approximate normality;
PS.IS.2.e.ii calculate a confidence interval using technology; and
PS.IS.2.e.iii interpret the interval within the context of the problem.
PS.IS.2.f.i construct appropriate null and alternate hypotheses;
PS.IS.2.f.ii identify the basic conditions for inference: random sample, independence, and approximate normality;
PS.IS.2.f.iii calculate and interpret the 𝑝 value using technology;
PS.IS.2.f.iv determine and justify whether to reject the null hypothesis; and
PS.IS.2.f.v interpret the results within the context of the problem.

PROBABILITY

PS.P.1.a Given two or more events, determine whether the events are complementary, dependent, independent, and/or mutually exclusive, and compute the probability of those events.
PS.P.1.b Represent and calculate probabilities using Venn diagrams, tree diagrams, and two-way tables.
PS.P.1.c Apply the addition rule, the multiplication rule, and complementary rule to calculate probabilities.
PS.P.1.d Calculate conditional probabilities to determine the association or independence of two events.
PS.P.2.a Identify discrete random variables and create a table to represent valid discrete probability distributions within the context of a problem.
PS.P.2.b Calculate and interpret the mean (expected value) and standard deviation for a discrete random variable within the context of a problem.
PS.P.2.c Determine if a discrete random variable satisfies the conditions for a binomial distribution.
PS.P.2.d Design and conduct a simulation of a binomial distribution.
PS.P.2.e Calculate and interpret probabilities from a binomial distribution within the context of a problem.
PS.P.2.f Calculate the mean and standard deviation for binomial distributions.
PS.P.2.g Describe the center, shape, and spread of a discrete random variable within the context of a problem.
PS.P.3.a Compare and contrast discrete and continuous distributions.
PS.P.3.b Represent probability as the area under the curve of a normal distribution using the Empirical Rule and graphing technology.
PS.P.3.c Describe the center, shape, and spread of normal distributions within the context of a problem.
PS.P.3.d Compare and contrast two or more sets of normally distributed data using 𝑧-scores, percentiles, or probabilities within the context of a problem.
PS.P.3.e Standardize a data value from a normal distribution and interpret the 𝑧-score within the context of a problem.
PS.P.3.f Calculate and interpret probabilities of a normal distribution using technology within the context of a problem.