Descriptive statistics are just what they sound like, statistics that allow you to describe or summarize the data with regard to such things as their distribution and their spread. Descripti
research & summaries multi-part question
All documents and data information will be sent after the tutor accepts the assignment as it only allows me to add 4 files max here.
Part 1:
Use statistical software to create, interpret, and analyze two histograms in a Word document.
INTRODUCTION
Descriptive statistics are just what they sound like, statistics that allow you to describe or summarize the data with regard to such things as their distribution and their spread. Descriptive statistics provide you with a picture of your data while inferential statistics (which we will discuss in subsequent assessments) allow you to draw conclusions about relationships between variables or differences between groups.
A solid understanding of descriptive statistics is foundational to grasping the concepts presented in inferential statistics. This assessment measures your understanding of key elements of descriptive statistics.
Your first statistical software assessment includes two sections in which you will do the following:
Create two histograms.
Calculate measures of central tendency and dispersion.
This will give you some experience with the data set.
KEY DETAILS AND INSTRUCTIONS
Submit your assessment as a Word document.
Refer to the JASP Step-by-Step: Histograms and Descriptive Statistics [PDF] document for additional help in completing this assessment.
View JASP Speedrun: Descriptive Statistics [Video] for a brief tutorial on this assessment.
As you work on this assessment, refer to the 7864 Data Set Instructions [PDF] file for information on variables used in this course.
Provide a title for your document and your name.
Download the 7864 data set, grades.jasp, which is a sample data set, and save it to your computer. The data represent a teacher’s recording of student demographics and performance on quizzes and a final exam. For this assessment, you will create and describe two histograms and a descriptives table using these data.
SECTION 1: HISTOGRAMS FOR VISUAL INTERPRETATION
Using the final and lowup variables in your grades.jasp data set, create two histograms and paste them into your Word document:
Variable Definition
Lowup lower division =1; Upper division =2
Final Final exam: number of correct answers
Variables and Definitions
Create:
A histogram for lower division.
A histogram for upper division.
Briefly describe what a visual inspection of this output tells you about the shape of the distributions.
SECTION 2: CALCULATE MEASURES OF CENTRAL TENDENCY AND DISPERSION
Using the grades.jasp file, compute descriptive statistics, including mean, standard deviation, skewness, and kurtosis for gpa and quiz3.
Variable Definition
GPA Previous grade point average
Quiz3 Quiz 3: number of correct answers
Variables and Definitions
Create a descriptives table and paste it into your Word document.
Under the table:
Report the mean, standard deviation, skewness, and kurtosis for GPA and quiz3.
Briefly describe what skewness and kurtosis tell you about these data with regard to normality.
Submit both sections of your assessment as an attached Word document.
SOFTWARE
The following statistical analysis software is required to complete your assessments in this course:
Jeffreys’s Amazing Statistics Program (JASP).
Refer to the Tools and Software: JASP page on Campus for general information. Make sure that your statistical software is downloaded, installed, and running properly on your computer.
Part 2:
Complete a data analysis report to analyze correlation for assigned variables.
INTRODUCTION
Exploring the associations between some variables in the courseroom using correlations might provide some important information about learner success. Youll need to pay attention to both magnitude, which is the strength of the association, and directionality, which is the direction (positive or negative) of the association. During this assessment, youll start learning about how to best approach correlational analyses like these and start getting some answers. You’ll explore the relationships that may or may not exist in your courseroom data.
In this assessment, you’ll get a chance to run and interpret your first inferential statistics analysis: correlations. Your readings and the Course Study Guide will help you in your efforts.
INSTRUCTIONS
For this assessment, you will use the Data Analysis and Application template (DAA Template [DOCX]).
For help with statistical software, refer to the JASP Step-by-Step: Correlations [PDF] document.
View JASP Speedrun: Correlations [Video] for a brief tutorial video on this assessment.
Refer to the 7864 Course Study Guide [PDF] for information on analyses and interpretation.
For information on the data set, refer to the 7864 Data Set Instructions [PDF] document.
The grades.jasp file is a sample data set. The data represent a teacher’s recording of student demographics and performance on quizzes and a final exam across three sections of the course.
This assessment is on correlations. You will analyze the following variables in the grades.jasp data set:
Variable Definition
Quiz 1 Quiz 1: number of correct answers
GPA Previous grade point average
Total Total number of points earned in class
Final Final exam: number of correct answers
Variables and Definitions
The DAA Template [DOCX] has five sections:
Data Analysis Plan.
Testing Assumptions.
Results & Interpretation.
Statistical Conclusions.
Application.
Step 1: Write Section 1 of the DAA: Data Analysis Plan
Name the four variables used in this analysis and whether they are categorical or continuous.
State a research question, null hypothesis, and alternate hypothesis for the total-final correlation.
State a research question, null hypothesis, and alternate hypothesis for the gpa-quiz1 correlation.
Step 2: Write Section 2 of the DAA: Testing Assumptions
Test for one of the assumptions of correlation?normality.
Create a descriptive statistics table in the statistical software to assess normality. This table should include the four variables named above including skew and kurtosis for each variable.
Paste the table in the DAA template.
Interpret the skewness and kurtosis values and determine whether the assumption of normality was violated or not violated.
Step 3: Write Section 3 of the DAA: Results & Interpretation
Using the statistical software, paste the intercorrelation matrix for the four variables into the document.
Below the output, first report the total-final correlation including degrees of freedom, correlation coefficient, and p value. Specify whether or not to reject the null hypothesis for this correlation.
Second, report the gpa-quiz1 correlation including degrees of freedom, correlation coefficient, and p value. Specify whether or not to reject the null hypothesis for this correlation.
Step 4: Write Section 4 of the DAA: Statistical Conclusions
Provide a brief summary of your analysis and the conclusions drawn about correlations.
Analyze the limitations of the statistical test and/or possible alternative explanations for your results.
Step 5: Write Section 5 of the DAA: Application
Analyze how you might use correlations in your field of study.
Name two variables that would work for such an analysis and why studying the relationship may be important to the field or practice.
Submit your completed DAA Template as an attached Word document in the assessment area.
SOFTWARE
The following statistical analysis software is required to complete your assessments in this course:
Jeffreys’s Amazing Statistics Program (JASP).
Refer to the Tools and Software: JASP page on Campus for general information. Make sure that your statistical software is downloaded, installed, and running properly on your computer.
Requirements: 2 assignments
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