INTRODUCTORY STATSTICS STATS 101 One-Way Independent ANOVA Name: Download the SPSS file "Grades" from CANVAS. 1. Test the hypothesis that there is a difference among first-year, sophomore, junior, and senior students (variable = year) in the total number of points they earned in the class (total). Before doing this, indicate what type of ANOVA you will perform (ie., Independent or Dependent), state your null and alternative hypotheses, and the alpha level. Type of ANOVA: Dependent Step 1: H;: Ho: Not HO Step 2: a 0.01 Step 3: Descriptives Total points in class (max=125) 95% Confidence Interval for Mean. Lower Bound Maximum Minimum Upper Bound Std Error Std. Deviation Mean 111 84 59.78 130.22 8.185 14.177 FIRST-YEAR 95.00 120 75 107.49 3.438 93.04 14.985 100.26 SOPHOMORE 19 51 124 97.36 105.33 15.963 1.995 101.34 64 JUNIOR 65 121 92.27 106.04 3.278, 19 99 16 14.288 SENIOR 51 124 103.53 97.61 1493 15.299 100.57 Total 105 ANOVA Total points in class (max= 125) Sum of Sig Mean Square df Squares 57.022 238 869 Between Groups 171.066 239.333 Within Groups 24172.648 101 24343.714 104 Total Multiple Comparisons Total points in class (max= 125) Dependent Variable: Tukey HSD Mean Difference (- 95% Confidence Interval Upper Bound Lower Bound Sig. Std. Error S YEAR IN SCHOOL O YEAR IN SCHOOL -30.37 19.84 947 SOPHOMORE 9.611 FIRST-YEAR -5.263 17.53 -30.22 899 9.139 -6.344 -29.27 20.95 973 9.611 SENIOR -4.158 30.37 -19.84 947 9.611 FIRST-YEAR SOPHOMORE 5.263 9.48 -11.64 -1.081 4.042 JUNIOR 14.22 -12.01, 996 1.105 5.019 SENIOR 30.22 17,53 9.139 899 6.344 FIRST-YEAR JUNIOR -9.48 11.64 993 4.042 1.081 SOPHOMORE 12.74 -8.37 949 2.186 4.042 SENIOR -20.95 973 9.611 4.158 FIRST-YEAR SENIOR 12,01 996 -14.22 5.019 -1.105 SOPHOMORE 8.37 -12.74 949 -2,186 4.042 JUNIOR Significance df values= Are post-hoc tests needed? (Pick One): Yes No Based on the SPSS output, state the conclusion you reached. Specifically, indicate (1) whether you reject or did not reject the null hypothesis and (2) write up the results using the format you see on the board (make sure to include the results of the post-hoc tests only if needed).

INTRODUCTORY STATSTICS STATS 101 One-Way Independent ANOVA Name: Download the SPSS file "Grades" from CANVAS. 1. Test the hypothesis that there is a difference among first-year, sophomore, junior, and senior students (variable = year) in the total number of points they earned in the class (total). Before doing this, indicate what type of ANOVA you will perform (ie., Independent or Dependent), state your null and alternative hypotheses, and the alpha level. Type of ANOVA: Dependent Step 1: H;: Ho: Not HO Step 2: a 0.01 Step 3: Descriptives Total points in class (max=125) 95% Confidence Interval for Mean. Lower Bound Maximum Minimum Upper Bound Std Error Std. Deviation Mean 111 84 59.78 130.22 8.185 14.177 FIRST-YEAR 95.00 120 75 107.49 3.438 93.04 14.985 100.26 SOPHOMORE 19 51 124 97.36 105.33 15.963 1.995 101.34 64 JUNIOR 65 121 92.27 106.04 3.278, 19 99 16 14.288 SENIOR 51 124 103.53 97.61 1493 15.299 100.57 Total 105 ANOVA Total points in class (max= 125) Sum of Sig Mean Square df Squares 57.022 238 869 Between Groups 171.066 239.333 Within Groups 24172.648 101 24343.714 104 Total Multiple Comparisons Total points in class (max= 125) Dependent Variable: Tukey HSD Mean Difference (- 95% Confidence Interval Upper Bound Lower Bound Sig. Std. Error S YEAR IN SCHOOL O YEAR IN SCHOOL -30.37 19.84 947 SOPHOMORE 9.611 FIRST-YEAR -5.263 17.53 -30.22 899 9.139 -6.344 -29.27 20.95 973 9.611 SENIOR -4.158 30.37 -19.84 947 9.611 FIRST-YEAR SOPHOMORE 5.263 9.48 -11.64 -1.081 4.042 JUNIOR 14.22 -12.01, 996 1.105 5.019 SENIOR 30.22 17,53 9.139 899 6.344 FIRST-YEAR JUNIOR -9.48 11.64 993 4.042 1.081 SOPHOMORE 12.74 -8.37 949 2.186 4.042 SENIOR -20.95 973 9.611 4.158 FIRST-YEAR SENIOR 12,01 996 -14.22 5.019 -1.105 SOPHOMORE 8.37 -12.74 949 -2,186 4.042 JUNIOR Significance df values= Are post-hoc tests needed? (Pick One): Yes No Based on the SPSS output, state the conclusion you reached. Specifically, indicate (1) whether you reject or did not reject the null hypothesis and (2) write up the results using the format you see on the board (make sure to include the results of the post-hoc tests only if needed).

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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