| 模型 | 模型答案 | 正确答案 |
|---|---|---|
| 金声玉亮2.0 | A. |
A |
| deepseekr1 | The experiment aims to compare the effects of fish oil and garlic capsules on cholesterol levels. Blocking is used to control for variables that influence the outcome. Past studies indicate **exercise intensity** is associated with cholesterol levels, while **sleep length** is not. Blocking on exercise intensity (A) reduces variability within blocks, improving the accuracy of treatment comparisons. Sleep length (B) is irrelevant, cholesterol level (C) is the outcome variable, and capsule type (D) is the treatment itself. **Answer:** A |
A |
| gpto1 | A | A |
| GPT-4o | A. by blocking on exercise intensity | A |
| llama3.1-70B-Instruct | A |
A |
| llama3.1-405B-Instruct | A. by blocking on exercise intensity Explanation: In experimental design, blocking is a technique used to control for the effect of an extraneous variable that is known to affect the outcome of interest. In this case, the outcome of interest is cholesterol level, and the extraneous variable is exercise intensity, which has been shown to be associated with cholesterol level in past studies. By blocking on exercise intensity, the experiment can control for its effect and isolate the effect of the treatment (fish oil or garlic capsules) on cholesterol levels. Blocking on sleep length (B) is not necessary because it has been shown to be unrelated to cholesterol levels. Blocking on cholesterol level (C) is not possible because it is the outcome of interest. Blocking on capsule type (D) is not necessary because it is the treatment being tested, not an extraneous variable. |
A |
| DeepSeek-Coder-V2 | A | A |
| Qwen2-72B-Instruct | A. by blocking on exercise intensity | A |
| baichuan4 | A. by blocking on exercise intensity | A |
| doubao | A Since exercise intensity is associated with cholesterol level and blocking is used to control for known sources of variability, blocking on exercise intensity would be appropriate to account for its potential effect on the results. Sleep length is not associated with cholesterol level, so blocking on it is not necessary. Blocking on cholesterol level or capsule type doesn't make sense as they are the variables being studied. |
A |
| minimax | A. by blocking on exercise intensity | A |
| kimi | A. by blocking on exercise intensity | A |
| wenxinyiyan | A Explanation: In experimental design, blocking is a technique used to reduce the effects of known or potential nuisance variables (variables that are not the focus of the experiment but may affect the results). The goal is to create groups (blocks) that are similar in terms of the nuisance variable, so that any differences observed within the blocks can be more confidently attributed to the experimental variable. In this question, the experiment aims to determine the effect of fish oil capsules or garlic capsules on cholesterol levels. The known nuisance variable is daily exercise intensity, which has been found to be associated with cholesterol level in past studies. Average sleep length, on the other hand, has not been found to be associated with cholesterol level. Therefore, to reduce the potential confounding effect of exercise intensity on the results, the experiment should be blocked on exercise intensity. This means that participants should be grouped based on their exercise intensity (low, moderate, high), and then within each group, they should be randomly assigned to receive fish oil capsules or garlic capsules. Blocking on sleep length (option B) would not be effective because sleep length is not associated with cholesterol level, so it is unlikely to be a confounding variable in this experiment. Blocking on cholesterol level (option C) would not be appropriate because cholesterol level is the dependent variable in this experiment; it is what is being measured to determine the effect of the capsules. Blocking on capsule type (option D) would not make sense because capsule type is the independent variable; it is what is being manipulated to see its effect on cholesterol level. |
A |
| zhipu | A. by blocking on exercise intensity Blocking on exercise intensity is appropriate because past studies have shown that exercise intensity is associated with cholesterol levels. This helps control for the variability in cholesterol levels that might be attributed to differences in exercise intensity, thereby allowing a clearer assessment of the effect of the fish oil or garlic capsules on cholesterol levels. Blocking on sleep length would not be useful since it is not associated with cholesterol levels, and blocking on cholesterol level or capsule type would not make sense in this context. |
A |
| gpto1 | A | A |
| deepseekv3 | A. by blocking on exercise intensity Explanation: Blocking is a technique used in experimental design to control for the effects of confounding variables. Since past studies have shown that daily exercise intensity is associated with cholesterol level, it is important to control for this variable to ensure that the effect of fish oil or garlic capsules on cholesterol levels is not confounded by exercise intensity. Blocking on exercise intensity allows the experiment to account for its potential influence. Sleep length, on the other hand, is not associated with cholesterol level, so blocking on it would be unnecessary. Blocking on cholesterol level or capsule type does not make sense in this context because cholesterol level is the outcome being measured, and capsule type is the factor being tested. |
A |