Most common numbers are 28, 16, 39, 32, and 15. Numbers below 31 tend to be picked more frequently. State lottery programs offer frequency charts for number selection
Two-way ANOVA compares mean differences between groups based on two independent variables. Test determines if there is an interaction between independent variables and dependent variable. Three-way ANOVA needed for three independent variables or two-way ANCOVA for continuous covariates
Weighted mean differs from ordinary mean by assigning different weights to data points. Equal weights result in same weighted mean as ordinary arithmetic mean. Weighted means can be expressed using coefficients that sum to one
Environmental monitoring characterizes and describes the state of the environment. Monitoring programs establish current status or baseline parameters. Results are reviewed, analyzed statistically, and published
Null hypothesis (H0) claims no effect or relationship exists in scientific research. Statistical tests assess evidence against null hypothesis to reach conclusions. Null hypothesis is tested using random sample from population
Statistics is the discipline of collecting, organizing, analyzing, and presenting data. Statistics deals with both quantitative and qualitative data. Statistics is divided into descriptive and inferential methods