Do not upload the watermark of tfth on Microsoft excel sheet

Question

Viswanathan · Accepted Answer

Introduction 
Our main objective of this study is to understand the basic concepts of statistics, its descriptive and inferential statistics. Totally there are four questions that was answered in this study with first question uses frequency distribution and also histogram to assess the distribution of the variable taken into consideration. The second question uses Pearson correlation and simple linear regression to determine the relationship between demand and unit price. The third question deals with one way ANOVA to determine whether there is a significant difference in the mean increased productivity among the four products. Finally, the fourth question involves multiple regression analysis to see whether Advertising and sales significantly influences the price
Question 1
	Class Interval
	Frequency
	Cumulative Frequency
	Relative Frequency
	Cumulative Relative Frequency
	Percentage
	50 - 60
	3
	3
	0.15
	0.15
	0.15
	60 - 70
	2
	5
	0.1
	0.25
	0.1
	70 - 80
	6
	11
	0.3
	0.55
	0.3
	80 - 90
	4
	15
	0.2
	0.75
	0.2
	90 - 100
	5
	20
	0.25
	1
	0.25
	Total
	20
	
	
	
	
About 15% of the student’s examination scores falls between 50 and 60 marks, 10% of the student’s examination scores falls between 60 and 70 marks, 30% of the student’s examination scores falls between 70 and 80 marks,

Do not upload the watermark of tfth on Microsoft excel sheet

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