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# Descriptive Statistics Analysis and Write-up

Descriptive Statistics Analysis and Write-up.

University of Maryland University College

STAT200 – Assignment #2: Descriptive Statistics Analysis and Write-up

Identifying Information

Student (Full Name):

Class:

Instructor:

Date:

Introduction:

The sample contains 30 samples of households from a population. The variables includes the marital status of the individual leading the household, income, age of the head, family size, annual expenditures, housing, electricity and water costs. The five variables selected for the analysis include income, Family, Marital Status, Water and Electricity.

Table 1. Variables Selected for the Analysis

Data Set Description and Method Used for Analysis:

Results:

Variable 1: Income

Numerical Summary

Table 2. Descriptive Analysis for Variable 1

Graph and/or Table: Histogram of Income

Description of Findings

The data provided shows the highest number of households has an income between the range of 95,000 – 100,000. The median also fall within the same range. For the sample the Standard deviation is low at 5516.5698. The points do not deviate greatly from the mean

Variable 2: Family Size

Numerical Summary

Table 3. Descriptive Analysis for Variable 2

Graph and/or Table

Description of Findings

The graph shows that the number of households increase with the decrease in members within the household. The average family size is 3.1 with the smallest household being one member family and the largest household having 6 members.

Variable 3: Marital Status

Numerical Summary

Table 4. Descriptive Analysis for Variable 3

Graph and/or Table

Description of Findings

The number of households being led by married individuals is equal to that of households led by unmarried people.

Variable 4: Water

Numerical Summary

Table 5. Descriptive Analysis for Variable 4

Graph and/or Table

Description of Findings

The data indicated that the highest number of households spend between \$500-\$570. However, the average expenditure of water for the sample is 613.1 which higher than the modal range. Water expenditure is skewed.

Variable 5: Electricity

Numerical Summary

Table 6. Descriptive Analysis for Variable 5

Graph and/or Table

Description of Findings

Most households from the sample spend between 1430-1520 on electricity and the mean falls within the same range. Additionally, the standard deviation is low at 83.7557 which show that the overall data is close to the mean.

Discussion and Conclusion

The income earned by most households fall under the same range between 95000 and 100,000. More than three quarters of the households earn an income between these ranges, the rest of the households earn above 90000 and the highest earn 11000. The highest expenditure within the analysis variables is electricity with the highest household paying \$1688. Water has the lowest expenditure with the cost going up to \$520 for some households.

Electricity is the best place to save money spent on expenditures. Each individual in a household spends electricity in their daily operations and can find small but significant ways of saving electricity used. Electronics used by each person contributes to the energy spent. If each person in a household contributed to the exercise, the amount saved on electricity would be statistically significant.

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