Question 1 a.Frequency distribution table (b) Histogram It is apparent that the shape of the above graph is asymmetric with a skew towards the rightowing to presence of tail on the right. As a result, it is possible that outliers are present on theright side. Also, the given distribution would not be considered as normal distribution as skew ispresent. (c) Owing to presence of positive outliers, it would be recommended that median must be usedas a measure of location for the given dataset since the mean might get distorted owing to the1
presence of these higher values. However, this is not the case with median which does not takeinto consideration the exact values. Question 2 (a)Whether demand and unit prices are related or not. Alpha = 0.05Null hypothesis H0:β=0Alternative hypothesis H1:β≠0Thetvalue=βsβ=−2.1370.248=−8.6169The p value for two tailed hypothesis test, t value and degree of freedom = 0.00It can be seen that p value is lower than level of significance and hence, null hypothesis would berejected and alternative would be accepted. Therefore, demand and unit prices are related. (b)Coefficient of determination R2=SSRSST=5048.8188181.479=0.6172
End of preview
Want to access all the pages? Upload your documents or become a member.
Related Documents
Frequency Distribution - PDFlg...
|8
|759
|133
STATISTICS. ASSIGNMENT. Student Name. [Pick the date]. lg...