Discuss about the Quantitative Methods in Business Researches.
A glaring issue which is gripping Australia labour force is that of differential pay being given to the two genders. In this regards, as per certain estimates, it has been found that the wages/salaries drawn by females is about 15% lower in comparison to the other gender i.e. males. Clearly, the existence of this trend in the future or worsening of the same can potentially have adverse impact on the participation of females in the workplace and also have implications for the workforce diversity. While some may argue that the difference in salary levels is on account of difference in representation of the two genders in different occupations, but there are some who indicate that the differential wage trend also is prevalent in occupations where female representation is more than 50%. Further, this inequality in gender pay also called as gender gap continues to exist despite presence of legislation which forbids any differentiation based on gender (Livsey, 2017). The central research question that is thus addressed is to find if gender gap is established in the dataset provided considering the underlying information about occupations management.
A unique dataset that has been provided for 1000 taxpayers from Australia is Dataset one. This is regarded as secondary in nature since the researcher has himself/herself not collected the data but ATO is the source of the data provided. Hence, it was the ATO which primarily collected the data and a sample from that data was used for dataset 1 making it secondary data (Flick, 2015). This dataset comprises of four variables in the form of gender, occupational code, salary amount and gift amount as deduction. While the first two are categorical variables, the latter two are quantitative variables. The categorical variables in the dataset are measured using nominal scale unlike quantitative variables which are measured using interval scale (Hair et. al., 2015). The five initial cases of this dataset that need to be reported are illustrated as follows.
Yet another dataset which is used is dataset 2 which comprises of only 30 samples and has two variables namely the salary level and the gender. It would be appropriate to label this data as primary data owing to the fact that this has been collected by the researcher only. Even though this is primary data but it is inferior to the secondary dataset which is dataset 1. This is on account of the few issues with the collection methodology. One of these is the underlying sampling technique which is not probability based but driven by my convenience and hence the odds of the data being biased are significant. Further, the data collected may not be accurate due to exaggerated responses by the respondents in an attempt to exaggerate their salary level owing to personal relationship between them and myself. The collection has been reduced to just two variables since these are mandatory for exploring the underlying research question with regards to possible gender gap being present (Eriksson and Kovalainen, 2015).
The above graph reflects on the difference in gender proportions that are expected across different occupations. It is noteworthy that the difference in the representation levels of the two genders is clearly very stark across some occupations. An ideal example of this would be the occupation with corresponding 7 where the representation of females is quite dismal as less than 5% of the individuals employed in this occupation for the sample comprises of females. A similar situation is witnessed in case of occupation with code 3 even though female representation is a tad better than the situation in code 7 occupation. Also, it is noteworthy that males are not subject to minority representation to such an extent is any of the occupations listed below.
The graph above clearly hints at the females being the dominant gender for lower salary levels. But as these salary levels tend to increase, the share of males keeps on increasing and females attain the status of being a minority gender. More than half of the females included in the sample had annual salary less than $ 40,000. An interesting question that initiates from the above data is whether the gender gap is the result of overrepresentation of females in low paying jobs or due to females being given lower salary for the same job for which males are paid a higher amount. This is a pertinent question which needs to be explored further.
The table further highlights the existence of the gender gap in Australian context whereby female concentration at lower salary levels is higher than the corresponding male concentration. Further, as salary levels tend to rise, this pay gap tends to become wider which implies that the proportion of females at high salary levels is quite less assuming that the given sample dataset 1 is representative of the actual population of interest. The underlying reasons for the above observations need to be further researched for better clarity on the issue of gender gap.
The various points in the scatter plot seem to highlight the absence of any meaningful relationship between the salary amount and gift amount related deduction. This observation seems to be supported by the coefficient of determination which is almost zero. Considering that square root of coefficient of determination leads to correlation coefficient value, thus, coefficient of correlation also assumes a value of zero thereby highlighting the unrelatedness of the two variables given (Eriksson and Kovalainen, 2015).
The objective of this task is to estimate the gender representation in those occupation populations which tend to have the highest level of median salary based on the data provided. Using the attached excel, these occupations have been indicated as 1,2,3 and 7. For these occupational codes, the female representation has been computed assuming a confidence level of 95% (Hillier, 2016).
In line with the above output derived from excel, one can reach the conclusion with a 95% possibility that the female representation would lie in the interval marked with a lower boundary of 27.39% and a higher boundary of 47.61%.
In line with the above output derived from excel, one can reach the conclusion with a 95% possibility that the female representation would lie in the interval marked with a lower boundary of 54.12% and a higher boundary of 67.99%.
In line with the above output derived from excel, one can reach the conclusion with a 95% possibility that the female representation would lie in the interval marked with a lower boundary of 7.28% and a higher boundary of 21.01%.
In line with the above output derived from excel, one can reach the conclusion with a 95% possibility that the female representation would lie in the interval marked with a lower boundary of 0.00% and a higher boundary of 9.07%.
From the above confidence interval, it would be fait to conclude that there is a under representation of females in high paying jobs as only in one occupational code i.e. 2 are the females in slight majority. In occupational codes 3 & 7, there is severe under representation of females which clearly is an unwelcome observation and needs to rectification going ahead.
H0 (Null Hypothesis): p≤0.8 thus implying that male representation in occupation code 7 is lesser than 80% or 0.08.
H1(Alternative Hypothesis): p>0.8 thus implying that male representation in occupation code 7 is greater than 80% or 0.08.
The test statistics of choice for testing the above hypothesis will be z. Also, the alternative hypothesis highlights that the relevant test would be right tailed. Assuming the significance level for the given hypothesis test as 5%, the test results derived from excel are pasted below.
The p value obtained from the above test is 0.0009. Apparently, it is lower that significance level taken for this test which is an indication of the current evidence being sufficient to facilitate rejection of null hypothesis (Flick, 2015). Thus, with a confidence level of 95%, it can be concluded that indeed the claim about representation of males in the given occupation exceeding 80% is correct.
The test statistics of choice for testing the above hypothesis will be t as population standard deviation remains unknown for the given variables. Also, the alternative hypothesis highlights that the relevant test would be two tailed. Assuming the significance level for the given hypothesis test as 5%, the test results derived from excel are pasted below.
The p value obtained from the above test is 0.000. Apparently, it is lower that significance level taken for this test which is an indication of the current evidence being sufficient to facilitate rejection of null hypothesis (Hair et. al, 2015). Thus, with a confidence level of 95%, it can be concluded that indeed the claim about existence of gender gap is supported by Dataset 1.
The test statistics of choice for testing the above hypothesis will be t as population standard deviation remains unknown for the given variables. Also, the alternative hypothesis highlights that the relevant test would be two tailed. Assuming the significance level for the given hypothesis test as 5%, the test results derived from excel are pasted below.
The p value obtained from the above test is 0.9103. Apparently, it is higher that significance level taken for this test which is an indication of the current evidence being insufficient to facilitate rejection of null hypothesis (Hillier, 2016). Thus, with a confidence level of 95%, it can be concluded that the claim about existence of gender gap is not supported by Dataset 2.
Conclusion
Dataset 1 provides evidence of the existence of gender gap in Australia context. However, Dataset 2 refutes the same but this would not be considered significant since there are potential issues with the data that has been identified in Section 1. The key question that remains unanswered is whether this gender gap is on account of high representation of females in the low paying jobs or due to gender based discrimination with regards to salary. Besides, the extremely skewed gender representation witnessed in certain occupations is clearly a matter of concern going ahead.
Further research should be undertaken so as to lend clarity on the questions that the given research study has raised. In particular, the focus has to be not to explore whether salary levels of females is lower than males but to highlight the underlying reasons especially in the backdrop of differing gender representation across occupations.
References
Eriksson, P. and Kovalainen, A. (2015) Quantitative methods in business research 3rd ed. London: Sage Publications.
Flick, U. (2015) Introducing research methodology: A beginner’s guide to doing a research project. 4th ed. New York: Sage Publications.
Hair, J. F., Wolfinbarger, M., Money, A. H., Samouel, P., and Page, M. J. (2015) Essentials of business research methods. 2nd ed. New York: Routledge.
Hillier, F. (2016) Introduction to Operations Research 6th ed. New York: McGraw Hill Publications.
Livsey, A (2017) Australia’s gender pay gap: why do women still earn less than men? [online] Available at https://www.theguardian.com/australia-news/datablog/2017/oct/18/australia-gender-pay-gap-why-do-women-still-earn-less-than-men [Assessed at May 21, 2018]
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