Guinea Pig Growth Chart

Date

Day

Puff

Black

Oreo

c.o.v.

1998-02-28

1

100

90

80

0.1111

1998-03-01

2

110

100

90

0.1000

1998-03-02

3

120

110

100

0.0909

1998-03-03

4

130

110

100

0.1348

1998-03-04

5

140

130

110

0.1206

1998-03-05

6

150

130

120

0.1146

1998-03-06

7

155

135

130

0.0945

1998-03-07

8

160

150

140

0.0667

1998-03-08

9

175

165

145

0.0945

1998-03-09

10

195

180

165

0.0833

1998-03-10

11

205

190

170

0.0932

1998-03-11

12

220

200

180

0.1000

1998-03-12

13

230

205

185

0.1091

1998-03-13

14

230

210

195

0.0830

1998-03-14

15

255

225

205

0.1102

1998-03-15

16

265

230

205

0.1292

1998-03-16

17

280

240

220

0.1239

1998-03-17

18

280

260

240

0.0769

1998-03-18

19

290

270

235

0.1051

1998-03-19

20

300

275

245

0.1007

1998-03-20

21

310

285

260

0.0877

1998-03-21

22

330

290

260

0.1198

1998-03-22

23

325

290

250

0.1302

1998-03-23

24

345

305

270

0.1224

1998-03-24

25

330

310

270

0.1007

1998-03-25

26

355

335

295

0.0930

1998-03-26

27

370

325

300

0.1070

1998-03-27

28

365

340

300

0.0979

1998-03-28

29

375

345

295

0.1195

1998-03-29

30

370

345

300

0.1048

1998-03-30

31

385

365

310

0.1099

1998-03-31

32

400

365

320

0.1109

1998-04-01

33

435

390

345

0.1154

1998-04-02

34

435

400

345

0.1153

The Table above gives the weights (gm) of three puppies from a litter of guinea pigs born on 1998-02-27. Coefficient of variation (c.o.v.) is standard deviation divided by the mean.

These data illustrate my claim that if you take a group of comparable animals (same species, same age), the coefficient of variation for any measure of size is about 10%.

Puff and Black moved to a new home on 1998-04-03, ending this data series.


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