a. Explain the results to a statistically educated person. 1. State what the ind

Question

a. Explain the results to a statistically educated person.

       1. State what the independent and dependent variables are

       2. State whether or not result is significant and the level of significance.

       3. If it is not significant, say it is inconclusive (Stop! You are done).

       4. If it is significant, state which means are higher (or lower) including which differences are significant (i.e., from Table 2).

       5. If it is significant, state the effect size

       6. What was learned conceptually from this study?

b. Explain the results to a friend from UM who has not taken statistics.

      1. Describe the study’s purpose and design in 1 or 2 simple sentences.

      2. If the result was not significant, say that there was no real effect.

      3. If the results were significant, explain results showed a real/systematic/not due to chance alone, etc. (choose one) effect and which means were different.

      4. If the results were significant explain how impactful/big/ important/ meaningful etc. the results were.

    5. What can one learn from this study?

Do NOT use esoteric statistical jargon of any kind when explaining to your friend.

AP2. A college professor endeavoring to find the best way to present a difficult topic divided 36 students into four groups of 9 students each. Students in condition "Lecture" received his standard lecture on the topic. Students in condition "Lecture+Supp" received the same lecture plus supplementary reading material. Students in condition "Video+Supp" received the same supplementary reading and saw a video Finally, students in condition Video+Disc saw the same video and then had a discussion about the video All the students were then given a test on the topic. The following two tables present the results. Table 1 ANOVA Summary Table df MSF Source Presentation Method Within groups 907.264 l'otal **p

Explanation / Answer

Explain the results to a statistically educated person. Independent Variable: Method of presenting, Dependent Variable: Test Scores Results are significant. That is there's a significant difference in method of presenting. Level = 0.01 Significant All the pair are significantly different. Video+Disc > Lecture+Supp >Lecture > Video+ Supp Effect size, eta square = 0.3924983 Conceptually learned: Video+Disc > Lecture+Supp >Lecture > Video+ Supp This order is better for presentation Explain the results to a friend from UM who has not taken statistics. Purpose: To check which method of presentation is more efficient. COmparing efficiency in method of presentation. Design: The different group is given different treatment (different method of presentation) and then a common test was conducted and the scores were studied -----Results were significant. There was a difference The results were significant. There is enough evidence to point out that there's a difference in efficiency of presenting method and this does not arises from the group variation or any random factor as all other factor were made to be as similar as possible! The order are Video+Disc > Lecture+Supp >Lecture > Video+ Supp The results were pretty impactful as it shows which presenting method is better over which. As the experiment was carried out on 0.01 level which means there's less than 1% chance that the conclusion we are drawing is wrong if there isn't really any difference in presenting method! The different presenting method have different efiiciency. the order is Video+Disc > Lecture+Supp >Lecture > Video+ Supp

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