document.write( "Question 1205060: Fill in the missing values for this ANOVA summary table:
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document.write( " S.S. d.f. M.S. F
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document.write( "Between 1723.267 7
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document.write( "Within
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document.write( "TOTAL 2999.267 51\r
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document.write( "I am so stuck and have gotten this one wrong several times, please help!
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Algebra.Com's Answer #841684 by math_tutor2020(3817)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Refer to this page \n" ); document.write( "https://stats.libretexts.org/Bookshelves/Introductory_Statistics/Inferential_Statistics_and_Probability_-_A_Holistic_Approach_(Geraghty)/13%3A_One_Factor_Analysis_of_Variance_(ANOVA)/13.05%3A_Understanding_the_ANOVA_Table\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "At the top of that page is the ANOVA template. \n" ); document.write( "Instead of \"factor\" we'll use \"between\". \n" ); document.write( "Instead of \"error\" we'll use \"within\".\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Here's the table your teacher has given you \n" ); document.write( "
\n" ); document.write( "We know the SS (sum of squares) values for rows 1 and 3. \n" ); document.write( "The missing SS value is the difference of the two given SS values.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "SS within = (SS total) - (SS between) \n" ); document.write( "SS within = 2999.267 - 1723.267 \n" ); document.write( "SS within = 1276\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let's update the table \n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Refer back to the link I mentioned. \n" ); document.write( "Focus on the \"degrees of freedom (df)\" column. \n" ); document.write( "The df expressions are: \n" ); document.write( "between = k-1 \n" ); document.write( "within = n-k \n" ); document.write( "total = n-1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Notice that \n" ); document.write( "df total = (df between) + (df within) = (k-1)+(n-k) = n-1 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The df value for \"between\" is 7 \n" ); document.write( "k-1 = 7 \n" ); document.write( "k = 7+1 \n" ); document.write( "k = 8 \n" ); document.write( "The df value for \"total\" is 51 \n" ); document.write( "n-1 = 51 \n" ); document.write( "n = 51+1 \n" ); document.write( "n = 52 \n" ); document.write( "Therefore \n" ); document.write( "df within = n-k = 52-8 = 44\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Or we could say \n" ); document.write( "df within = (df total) - (df between) \n" ); document.write( "df within = 51 - 7 \n" ); document.write( "df within = 44 \n" ); document.write( "which is a faster shortcut.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let's update the table \n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "According to that link I posted, \n" ); document.write( "MS between = (SS between)/(df between) \n" ); document.write( "MS between = (1723.267)/(7) \n" ); document.write( "MS between = 246.181 \n" ); document.write( "and, \n" ); document.write( "MS within = (SS within)/(df within) \n" ); document.write( "MS within = (1276)/(44) \n" ); document.write( "MS within = 29 \n" ); document.write( "There doesn't exist \"MS total\". \n" ); document.write( "We'll leave that cell blank. \n" ); document.write( "\"MS\" stands for \"Mean Square\".\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let's update the table \n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "We have one last gap to fill in. \n" ); document.write( "To get the F statistic, we divide the MS between over the MS within\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "F = (MS between)/(MS within) \n" ); document.write( "F = (246.181)/(29) \n" ); document.write( "F = 8.489\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Here is the fully completed ANOVA table. \n" ); document.write( "
\n" ); document.write( "The two cells under the F statistic are left blank.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Some ANOVA tables will include the F critical value and/or the p-value. However, I'll stop here since it appears your teacher wants just up to the F statistic.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Side note: This applies to single factor ANOVA only. \n" ); document.write( " \n" ); document.write( " |