{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

stats_review_card_triola

# R chart range chart control chart of sample ranges

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: time of the characteristic values, including a centerline, lower control limit (LCL), and upper control limit (UCL). R Chart (range chart): Control chart of sample ranges. UCL: D4R Centerline: LCL: R D3R b1 = r sy sx b0 : n1 g x22 - 1 g x22 y-intercept of regression line b0 = y - b1x or b1 = n g 1xy2 - 1 g x21 g y2 where df = 1 Test statistic: H= R2 R2 R2 12 1 2 k a + +Á+ b - 31N + 12 N1N + 12 n1 n2 nk Predicting value of y : If no linear correlation, best predicted y value is y; if there is a linear correlation, the best predicted y value is found by substituting x value into regression equation. Marginal Change in a variable: Amount a variable changes when the other variable changes by one unit. Slope b1 is the marginal change in y when x changes by one unit. Influential Point: Strongly affects graph of regression line. Residual: Difference between an observed sample y N value and the value y that is predicted using the regression equation. N Residual = y - y. Least-Squares Property: The sum of squares of the r...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online