Product pair

n food items in category

Mean change in sales

SD

t

df

p

Juice

28

0.957

0.402

Bottled water

6

1.080

0.510

Total

34

0.979

0.417

0.651

32

0.260

Chips

17

1.122

0.578

Nuts

24

0.936

0.380

Total

41

1.013

0.474

1.160

26

0.128

Chips

17

1.122

0.578

Rice crackers

9

0.923

0.330

Total

26

1.053

0.508

0.949

24

0.176

Regular milk

4

1.131

0.229

Lite milk

2

1.232

0.540

Total

6

1.165

0.304

−0.349

4

0.372

Butter

6

0.824

0.232

Margarine

4

0.935

0.161

Total

10

0.868

0.204

−0.897

8

0.198

Block cheeses

12

0.892

0.392

Cottage cheese

3

1.444

0.490

Total

15

1.002

0.456

−2.094

13

0.028

Imported soft drinks

42

0.778

0.436

Local soft drinks

4

0.632

0.579

Total

46

0.765

0.444

0.625

44

0.267

Chocolate

24

1.023

0.503

Dried fruit

19

1.200

0.615

Total

43

1.101

0.555

−1.038

41

0.153

Unhealthy breakfast cereals

32

1.051

0.372

Healthy breakfast cereals

5

0.849

0.342

Total

37

1.024

0.370

1.139

35

0.131

Prepared chicken meals

6

1.229

0.507

Whole chicken

7

0.773

0.291

Total

13

0.983

0.453

2.029

11

0.034