Need a short answer Literature review on does eating breakfast increase test scores with a reference. I need

Need a short answer Literature review on does eating breakfast increase test scores with a reference.
I need to provide more detail about data collection, where, when, by whom, how, etc?
We identified three hundred names and randomly assigned them into two groups of one hundred and fifty students in each group. Each group had seventy-five boys and seventy-five girls. The participants were assigned identification codes 001 to 300 to ensure the maximum privacy of the students was achieved. The test group was identified with codes N001 to 150 and the control group members were identified with codes B151 to B300.
The test group was put in the test room just before they went for breakfast. The test comprised of 20 questions with a test duration of thirty minutes. They were then allowed to have their breakfast upon completion of the paper.
In the second group, the control group was given the same test in the second test room immediately after their breakfast and just before the first group (test group) was allowed to go and have either breakfast. This allowed the test handlers to ensure that the second group did not have any single chance to understand the contents or rules of the paper which would severely affect the authenticity of the results. Upon completion, the test was marked and their results in entered in excel software for analysis.
The limitations of this data collection procedure are that only one factor was considered leaving out the possibilities that other factors might compromise the findings based on the fact that the study frequency, quality of sleep and the grooming extent were not captured. This hence leaves out possible factors that could play a pivotal role in the test scores irrespective of whether an individual had breakfast or not.
The test scores of the two groups were analyzed and compared in terms of the mean, median, mode, max, min, range, and standard deviation. A comparative frequency table was also established to give out a visual appearance of the statistical metrics states above.
I need a Box-whisker plot
The descriptive statistics summary of the control group was as follows: the mean was 68.98667, the median was 70, the mode was 71, the standard deviation was 9.678723, the range was 32, the minimum was 52, and the maximum score was 84.
The descriptive statics summary of the test group was as follows: the mean was 47.64, the median was 49, the mode was 52 standard deviation of 14.58706, the range was 51, the minimum was 20, and the maximum score was 71.
You can also provide box-whisker plot (5 number summary)
I included the original and updated paper

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