Question

Hello,

Please give me step by step answer (with screenshot) of SPSS using the ANOVA program to answer the following question. Chegg gave different answers.

A researcher would like to find out whether a particular diet affects a person’s cholesterol reading. She records the cholesterol readings of 23 men who ate cow meat for dinner every night, 24 men who ate chicken and 19 men who ate pig; her data appears in the table to the right. She wants to know whether the differences in the average readings are significant; i.e., whether the average reading of all men who eat cow is different from the average reading of those who eat chicken or whether these averages differ from the average reading of those who ate pig.



Cow Chicken Pig
364 260 156
245 204 438
284 221 272
172 285 345
198 308 198
239 262 137
259 196 166
188 299 236
256 316 168
263 216 269
329 155 296
136 212 236
272 201 275
245 175 269
209 241 142
298 233 184
342 279 301
217 368 262
358 413 258
412 240
382 243
593 325
261 156
280

Answer 1

enter the cholesterol readings for cow in 1st column and in the following next column enter 1 for all cholesterol readings(cow)

below the cow readings enter the chicken values and in the following column enter 2 for all reading of chicken

similarly for pig enter the values

go to analyse then compare means and then one way anova

click ok and the result is displayed in the output

here p-value is greater than 0.05 ie., 0.216>0.05

hence we accept null hypothesis ie., there is no significant difference between the cholesterol readings of cow, chicken and pig

remark: here the alternative hypothesis: at least one of cholesterol readings of cow, chicken, pig differ from each other