Explain why the student's decision to omit inferential statistics from their formal research report is incorrect, and describe what the descriptive statistics indicate about the relationship between screen time and life satisfaction.
Case context: A student researcher is investigating the relationship between daily screen time and self-reported life satisfaction. After plotting the data on a scatterplot, they observe an indistinct 'cloud' of points and compute a Pearson's of . Based solely on these descriptive statistics, the student decides to write a summary stating that the variables are unrelated and intends to omit any inferential statistics from their final paper because they believe such tests are unnecessary when no effect is present.
Question: Explain why the student's decision to omit inferential statistics from their formal research report is incorrect, and describe what the descriptive statistics indicate about the relationship between screen time and life satisfaction.
Sample answer: The student's decision is incorrect because a formal research report always requires the reporting of inferential statistics, even when the descriptive statistics show no relationship. Descriptively, the indistinct scatterplot cloud and Pearson's of indicate that screen time and life satisfaction are essentially unrelated.
Key points:
- Descriptive statistics (scatterplot cloud and Pearson's of ) show the variables are essentially unrelated.
- Inferential statistics are a required part of any formal research report.
- A formal report cannot omit inferential statistics based only on descriptive patterns.
Rubric: To receive full credit, the response must explain: 1) The descriptive statistics show that screen time and life satisfaction are essentially unrelated. 2) Inferential statistics are still a required component of a formal research report even if descriptive statistics suggest no effect. 3) Omitting inferential statistics violates formal reporting standards.
0
1
Tags
KPU
Research Methods in Psychology - 4th American Edition @ KPU
Related
In a correlational study, what do a scatterplot revealing an indistinct 'cloud' of data points and a calculated Pearson's r of -.02 indicate?
In a correlational study, a scatterplot that resembles an indistinct 'cloud' of points and a calculated Pearson's r of -.02 provide descriptive evidence that the variables are essentially unrelated.
A researcher is analyzing the descriptive statistics from several correlational studies in psychology. Match each set of results with the most appropriate conclusion regarding the relationship between the variables.
A psychology researcher is investigating the relationship between personality traits and reaction times. After observing that the variables appear to have 'no effect' on each other, they must organize their evidence chain for a report. Arrange the following components of their analysis in the correct logical order, starting from the initial visual discovery of the data pattern.
You are drafting a 'synthetic results' section for a laboratory simulation designed to teach psychology students how to identify the absence of a relationship between two variables. Which set of visual and numerical parameters should you formulate to represent a study where the variables are essentially unrelated?
In a formal research report, inferential statistics are still required even if descriptive statistics (such as a scatterplot 'cloud' and a Pearson's of ) indicate that the variables are essentially unrelated.
In a correlational study, researchers utilize specific descriptive indicators to identify when two variables are essentially unrelated. Match each component of this 'no effect' scenario with its corresponding descriptive or procedural description.
A researcher argues that a Pearson's of and a scatterplot showing an indistinct 'cloud' of data points provide evidence for a 'subtle negative link' between two variables. When evaluating the descriptive validity of this claim, a scientist would conclude that the variables are actually essentially _____.
When analyzing a Pearson's of from a correlational study alongside a scatterplot showing an indistinct 'cloud' of data points, a researcher determines that the _____ of the coefficient—not its sign—is the critical feature that reveals the variables are essentially unrelated.
A peer reviewer is judging a results section in which the author reports a scatterplot showing an indistinct 'cloud' of data points and a Pearson's of , then concludes the two variables are 'essentially unrelated.' Arrange the following evaluative steps in the order the reviewer should apply them to assess whether that conclusion is well-supported.
In a correlational research study, identify the two descriptive statistics that indicate the variables are essentially unrelated, and explain what statistical analyses must still be performed and reported in a formal research report.
Explain why the student's decision to omit inferential statistics from their formal research report is incorrect, and describe what the descriptive statistics indicate about the relationship between screen time and life satisfaction.
Imagine you are drafting the results section of a correlational study on the relationship between dietary sugar intake and sleep quality. If your scatterplot shows an indistinct 'cloud' of data points and your computed Pearson's is , how should you interpret these descriptive findings, and what must you still include in your formal research report?