Practical Business Statistics

12-month moving adjusted antilog Appendix Table arithmetic mean binomial cent Chapter class interval column computed confidence limits considered constant control chart control limits cycles cyclical data of Table degrees of freedom digits E. S. Pearson estimating equation exponential forecast formula frequency distribution hypothesis increase index number kurtosis large number larger logarithms measure median method month moving average multiplying normal curve normal distribution number of defectives number of items original data orthogonal polynomial percentage platykurtic plotted polynomial population pounds price index Prob probability distribution probability of obtaining probability point procedure production quantity random sample ratio reject relative Roebuck and Company sample means seasonal index selected shown shows significant skewed Source of data squares standard deviation statistical straight line tensile strength trend equation trend values units variable variance variation weights X-values X₁ Σ Χ ΣΧ