minitab

Catfoodproteindata.xlsx

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Sheet1

Stomach Acid Data Set from StomachAcid.MTW
For more info go to https://support.minitab.com/en-us/datasets/equivalence-tests-data-sets/stomach-acid-data/
You can use this data to demonstrate Equivalence Test for a 2x2 Crossover Design.
Data are pH values after treatment
Group 1, Generic	Group 1, Brand	Group 2, Brand	Group 2, Generic
3.92	4.01	3.76	3.51
4.22	4.66	4.69	3.73
5.55	5.66	4.53	3.91
3.66	3.93	3.31	3.21
4.76	4.78	3.19	2.76
3.91	3.87	4.24	3.83
3.58	4.23	4.36	4.25
3.93	4.17	5.41	4.94
3.29	3.52

Sheet2

Cat food protein data
Worksheet column	Description
Original	The amount of protein in the original cat food
Discount	The amount of protein in the less expensive cat food
Original	Discount
33.96	34.32
34.32	33.71
34.16	33.04
34.24	34.4
33.97	34.83
34.42	33.29
33.59	33.5
33.89	33.94
34.28	34.56
	34.12

A food science engineer for a pet food company tests a new, less expensive formulation of their popular cat food. The engineer wants to know whether the new formulation contains more or less protein. The engineer measures the amount of protein in 100 gram samples of both formulations. The results are given in grams.