Table 1. Data on the weight of each rat from the sample (n=20), in grams.

Rats	Weight (in grams)
1	250
2	269
3	330
4	350
5	340
6	220
7	270
8	370
9	245
10	350
11	335
12	250
13	250
14	310
15	240
16	240
17	250
18	260
19	240
20	330