Question

"Life Is Fun Love Is Strange Inc" is a major producer of essential life products designed to support the enjoyment of life and maintain the unexpected events associated with love. The Board of Directors decided to analyze 2 of their stores: "Fun Life" and "Strange Love" in "Heaven City". The CEO asked you to conduct the following

1) To visually assess Normality for each one of these samples, we create a bar diagram or a histogram for each and check if it resembles a normal curve, with one mode in the middle Create 2 separate graphs to assess normality of the given data. Write your conclusion for each

	Fun Life		Strange Love
9/2/19	$    10,499.94		$    15,602.13
9/9/19	$    12,570.94		$    15,266.79
9/16/19	$      3,005.02		$      4,081.42
9/23/19	$    14,248.23		$      1,382.24
9/30/19	$      8,636.75		$      8,275.37
10/7/19	$    14,204.85		$      1,245.25
10/14/19	$      9,543.69		$    10,673.07
10/21/19	$      5,263.17		$    10,464.89
10/28/19	$      7,371.62		$      8,938.07
11/4/19	$      5,008.26		$    10,442.26
11/11/19	$      3,489.96		$      2,108.36
11/18/19	$    12,743.37		$    13,724.84
11/25/19	$      1,848.10		$      9,319.00
12/2/19	$      5,789.95		$      7,755.35
12/9/19	$      7,586.66		$    12,327.17
12/16/19	$      2,287.95		$      2,343.91
12/23/19	$      3,356.14		$      2,444.49
12/30/19	$      4,558.28		$    12,514.89
1/6/20	$      7,247.02		$      4,998.70
1/13/20	$      7,374.31		$    13,333.44
1/20/20	$      4,593.70		$    14,156.07
1/27/20	$      1,792.20		$      6,646.60
2/3/20	$      3,248.34		$      3,494.17
2/10/20	$      1,372.53		$    17,622.30
2/17/20	$    11,061.58		$      8,109.53
2/24/20	$      9,250.06		$    11,629.81
3/2/20	$      3,598.44		$      1,294.15
3/9/20	$    13,069.25		$    14,609.46
3/16/20	$      1,769.34		$    16,544.91
3/23/20	$      5,340.35		$      6,791.68
3/30/20	$      9,584.29		$      9,749.47
4/6/20	$    14,422.19		$      3,744.22
4/13/20	$      4,139.96		$    11,331.56
4/20/20	$      4,917.33		$    10,489.14
4/27/20	$    12,172.46		$    17,745.47

Answer 1

Sol:

In Excel select the data

Go to

Insert>Histogram

select the number of bins to 5

we get

From histogram

we see

Mean of funlover       7,056.18
Median of funlover       5,789.95
standard deviation of funlover 4112.131634

Distribution is positively skewed

Tail towards right side

variable funlife do not follow normal distribution

For variable strange love

we see

Mean of strangelove       9,177.15
Median of strangelove       9,749.47
standard deviation of strangelove       5023.761097

shape is symmetrical

variable strangelove follows normal distribution