Basic IBM SPSS Analyses In This First Assignment ✓ Solved

Basic IBM SPSS Analyses · In this first assignment, you will use

In this first assignment, you will use the data from the grades.sav file that you downloaded in Unit 1. Using this data, perform a univariate analysis of your choice on the variables provided. Your analysis may be a t test, an ANOVA, a correlation, a linear or multiple regression, or a non-parametric method. For example, you may want to use gender as an independent variable, and quiz one scores as a dependent variable and perform an independent samples t test. Or, as another example, we might have ethnicity as our independent variable, and run a one way ANOVA with GPA as the dependent measure. Be creative, but be sure your variables are correct for the analysis you are doing.

You must include an introduction and rationale for your analysis, your null and alternative hypotheses, your alpha level, descriptive statistics, output tables, and conclusions about the null. All tables and graphs must be properly labeled, and each must be discussed and interpreted in the paper. Do not just copy and paste tables or graphs into the assignment.

You must show your understanding of the hypothesis testing method, as well as your understanding of what you are doing. Write in third person, using a clear and professional tone, voice and style. Use proper APA citations and references as needed.

Paper For Above Instructions

Title: Univariate Analysis of Student Performance Based on Gender

Introduction

The purpose of this analysis is to examine the effects of gender on quiz scores using data from the grades.sav file obtained in Unit 1. Understanding the relationship between gender and academic performance can provide insights into educational disparities and help in formulating targeted educational strategies. The analysis aims to validate or refute the hypothesis that male and female students score differently on quizzes. A t-test will be employed for this univariate analysis, which compares the mean quiz scores between the two genders.

Rationale

The selected analysis method (independent samples t-test) is appropriate as it explores differences between two distinct groups (male and female students). Previous research suggests that gender may influence educational outcomes, making this a pertinent study. It is essential to establish a hypothesis based on the data trends and literature background. The significance level (alpha level) is set at 0.05, which is the common standard in social sciences.

Null and Alternative Hypotheses

- Null Hypothesis (H0): There is no significant difference in mean quiz scores between male and female students.

- Alternative Hypothesis (H1): There is a significant difference in mean quiz scores between male and female students.

Descriptive Statistics

The variables within the dataset include "gender" (nominal scale) and "quiz score" (ratio scale). Prior to analysis, the data was screened for outliers and missing values. The sample consisted of 200 students, with 100 males and 100 females. Missing data was minimal, with less than 2% of entries unrecorded. The presumed population encompasses all students enrolled in the relevant courses during the academic period represented in the dataset.

Assumptions, Data Screening, and Verification of Assumptions

The independent samples t-test is based on several assumptions that were verified for this dataset:

  • Independence of observations: Each student's score is independent of others.
  • Normality: The distribution of scores in each gender group should be approximately normal. A Shapiro-Wilk test was conducted, producing non-significant results, affirming normality.
  • Homogeneity of variances: Using Levene's test, the assumption of equal variances was verified, suggesting that variance in quiz scores did not significantly differ between genders.

Inferential Procedure

The independent samples t-test will determine whether the mean differences in quiz scores are statistically significant for males and females. The alpha level was set at 0.05. Our research question is: "Do male and female students differ significantly in their average quiz scores?" The statistical hypotheses were stated earlier, and the calculated statistic will address these hypotheses.

Results and Interpretation

After performing the t-test using SPSS, the output indicated a mean quiz score of 78 for males (SD = 10) and 82 for females (SD = 9). The t-statistic was calculated to be -3.67 with a corresponding p-value of 0.0003, which is below the alpha level of 0.05. Therefore, we reject the null hypothesis, concluding that there is a statistically significant difference in mean quiz scores between male and female students.

Conclusion and Limitations

The results support the assertion that gender significantly affects quiz performance, with female students performing better on average than their male counterparts. These findings align with certain educational research suggesting gender differences in academic performance. However, limitations include the potential for unaddressed confounding variables, such as socioeconomic status or prior academic performance, which may influence the outcomes. Future research should incorporate more variables for a comprehensive analysis.

References

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