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RSCH FPX 7864 Assessment 1 Descriptive Statistics

RSCH FPX 7864 Assessment 1 Descriptive Statistics

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RSCH FPX 7864 Assessment 1 Descriptive Statistics

Student Name

Capella University

RSCH-FPX 7864 Quantitative Design and Analysis

Prof. Name

Date

Introduction

Descriptive Statistics: A Vital Tool in Data Summarization

Descriptive statistics hold immense importance in summarizing datasets, whether they encompass an entire population or a sample thereof. This analytical approach involves crucial measures such as the mean, median, and mode for central tendency, alongside measures of variability including standard deviation, variance, minimum and maximum variables, kurtosis, and skewness (Hayes, 2023). Additionally, histograms, which serve as visual representations of frequency distributions for a single variable, aid in comprehending the distribution of dependent variables (“What is a histogram chart,” 2023).

Section 1: Histograms for Visual Interpretation

Utilizing Histograms for Visual Analysis

Within this section, two distinct histograms depict student scores categorized into various ranges. The height of each bar corresponds to the count based on the final exam scores, providing a clear representation of the measured information (“What is a histogram chart,” 2023).

Section 2: Calculate Measures of Central Tendency and Dispersion

Exploring Measures of Central Tendency and Dispersion

Descriptive statistics are employed to calculate fundamental metrics like mean and standard deviation, crucial for understanding data characteristics. The mean, often used to describe central tendency, indicates the average value for the GPA (M = 2.862) and Quiz 3 (M = 7.133) datasets. Standard deviation, offering a more precise estimate of dispersion, is essential for understanding the spread of scores in relation to the mean (Trochim, 2023). For GPA (SD = 0.713) and Quiz 3 (SD = 1.600), these values are presented. Skewness and kurtosis, indicators of the frequency distribution shape, are within the acceptable range of -1 to +1, suggesting normality for each distribution (Quality Advisor, 2023).

References

Hayes, A. (2023, March 21). Descriptive statistics: Definition, Overview, types, example. Investopedia. Retrieved April 27, 2023, from https://www.investopedia.com/terms/d/descriptive_statistics.asp

What is a histogram chart? TIBCO Software. (n.d.). Retrieved April 28, 2023, from https://www.tibco.com/reference-center/what-is-a-histogram-chart#:~:text=A%20histogram%20is%20a%20graph,to%20each%20of%20those%20bins.

RSCH FPX 7864 Assessment 1 Descriptive Statistics

Trochim, P. W. M. K. (n.d.). Descriptive statistics. Research Methods Knowledge Base. Retrieved April 28, 2023, from https://conjointly.com/kb/descriptive-statistics/

 




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