Statistics
Virginia SOL A2.ST.1
Apply the data cycle with a focus on univariate quantitative data represented by a smooth curve, including a normal curve.
What students need to be able to do
- Formulate investigative questions requiring the collection or acquisition of univariate quantitative data.
- Collect or acquire univariate data through research, surveys, observations, experiments, polls, or questionnaires.
- Examine the shape of a data set (skewed versus symmetric) and sketch a smooth curve to model the distribution.
- Identify the properties of a normal distribution.
- Describe and interpret a data distribution represented by a smooth curve by analyzing measures of center, spread, and shape.
- Calculate and interpret the z-score for a value in a data set.
- Compare two data points from different distributions using z-scores.
- Determine the relationship between the mean, standard deviation, and z-score of a data set.
- Apply the Empirical Rule to answer investigative questions.
- Compare multiple data distributions using measures of center, spread, and shape.