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statistics assignment :frequency distribution

   

Added on  2021-05-30

9 Pages1084 Words88 Views
STATISTICSASSIGNMENTStudent Name[Pick the date]Question 1 (a)For the given data set the frequency distribution is represented in the table given below:

(b)For the percentage frequency of the data, the histogram is represented below:(c)The graph has an asymmetric shape viewing the unequal length of the tail on either sides. Fora symmetric graph these have to be equal. Owing to the shape being asymmetric, the valueson the right end such as in excess of $ 450 can be outliers or abnormal values (Hillier, 2016)(d)The mean is considered to be the default measure of central tendency but this assumptionholds true only when the data is not skewed. In the presence of skew, the mean can bepotentially leading due to the effect of the extreme values. Hence, a better choice to representcentral tendency would be median which does not get impacted by outlier data (Hillier,2016).1

Question 2 ANOVA (a)Test to find the presence of relation between variable 1 (Demand) and variable 2 (unit price) Assuming alpha = 0.05 or 5% The p value with respect to the t value comes out to be 0.000. Here, and this lead rejection of and acceptance of Since, slope cannot be taken as zero, hence it implies the linear relationship between thevariables is significant and cannot be ignored (Koch, 2013).(b)Coefficient of determination for the given case 2

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