The compact car market in the United States is extremely competitive. Sales for six of the top models for six months in 2011 follow (Motor Trend, November 2, 2011). MonthChevy CruzeFord FocusHyundai ElantraHonda CivicToyota CorollaVW JettaMay227112230320006183411698516671Jun248962138519992188721748517105Jul244681757715713151811488914006Aug218971642015054145001409312083Sep180971614715023143861372410309Oct162441617314295130581300012386At the .05 level of significance, test for any significant difference in the mean number of cars sold per month for the six models. If your answer is zero, enter "0". SourceDFSS (to the whole number)MS (to the whole number)F (to 2 decimals)p (to 3 decimals)Auto Month Error Total

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Description: The compact car market in the United States is extremely competitive. Sales for six of the top models for six months in 2011 follow (Motor Trend, November 2, 2011). MonthChevy CruzeFord FocusHyundai ElantraHonda CivicToyota CorollaVW JettaMay22711223

Excel Procedure: Enter the given data in Excel sheet. Go to Data Click on Data Analysis. Select…

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The compact car market in the United States is extremely competitive. Sales for six of the top models for six months in 2011 follow (Motor Trend, November 2, 2011).

Month	Chevy Cruze	Ford Focus	Hyundai Elantra	Honda Civic	Toyota Corolla	VW Jetta
May	22711	22303	20006	18341	16985	16671
Jun	24896	21385	19992	18872	17485	17105
Jul	24468	17577	15713	15181	14889	14006
Aug	21897	16420	15054	14500	14093	12083
Sep	18097	16147	15023	14386	13724	10309
Oct	16244	16173	14295	13058	13000	12386

At the .05 level of significance, test for any significant difference in the mean number of cars sold per month for the six models. If your answer is zero, enter "0".

Source	DF	SS (to the whole number)	MS (to the whole number)	F (to 2 decimals)	p (to 3 decimals)
Auto
Month
Error
Total

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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