# Coefficient 7 17 17 solutiontable stat 2023 holbrook

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Unformatted text preview: AT 2023 - Holbrook Xi Xi2 Yi2 XiYi 1 1 1 1 1 2 1 4 1 2 3 2 9 4 6 4 2 16 4 8 5 4 25 16 20 15 7 - 18 18 Yi 10 55 26 37 Solution STAT 2023 - Holbrook r= ∑ ( ∑ X )( ∑ Y ) XY − n ( n − 1) s x s y (15)(10) 37 − 5 r= = .904 ( 5 − 1) (1.581)(1.225) 7 - 19 19 Using the TI­83 STAT 2023 - Holbrook 1. 2. 2. We can also get the values needed for the formula We from the TI-83. First we must enter the data into two lists: First two Hit “STAT”, “EDIT” select “Edit” Position cursor over “L1” and hit “CLEAR” and “ENTER” Enter each X value by typing the number and hitting “ENTER”. Enter value “1” and “ENTER”, etc. 3. Position cursor over “L2” and hit “CLEAR” and “ENTER” Enter each Y value by typing the number and hitting “ENTER”. Enter value Make sure that the X and Y values in L1 and L2 Make “line up” (they are ordered pairs). “line 7 - 20 20 Using the TI­83 STAT 2023 - Holbrook 1. After the ordered pairs have been entered After into two lists do the following: into Hit “STAT” and scroll to “CALC” Select “2-Var Stats” Hit “2nd” and “1” (for L1) Hit “,” (located above 7) Hit “2nd” and “2” (for L2) Hit “ENTER” 2. All sums and standard deviations needed for All the formula are given. the 7 - 21 21 End of Chapter Any blank slides that follow are blank intentionally....
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## This note was uploaded on 12/07/2011 for the course STA 2023 taught by Professor Staff during the Fall '11 term at Santa Fe College.

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