A researcher wants to conduct trends of malaria case for the last five years in low land district. The researcher collected confirmed malaria cases from health facilities around the district. The results were 145 cases in 2014; 276 cases in 2015; 356 case in 2016 : 217 cases in 2017 and 467 cases in 2018. Finally, the researcher wanted to present these findings with graph. What is the most appropriate method of data presentation to be used by , a researcher? a. Frequency polygon b. Scatter plot c. Line graph d. Histogram

The most appropriate method of data presentation for the researcher to use in this scenario would be a line graph.<br /><br />A line graph is a type of chart that displays information as a series of data points connected by straight lines. It is particularly useful for showing trends over time, which is the case in this scenario where the researcher wants to present the trends of malaria cases over the last five years.<br /><br />By plotting the number of confirmed malaria cases on the y-axis and the years on the x-axis, the researcher can easily visualize the changes in the number of cases over the five-year period. The line graph will allow the researcher to identify any patterns or trends in the data, such as whether the number of cases is increasing or decreasing over time.<br /><br />The other options, such as a frequency polygon, scatter plot, and histogram, are not as suitable for this particular scenario. A frequency polygon is used to display the frequency of different categories of data, a scatter plot is used to show the relationship between two variables, and a histogram is used to display the distribution of a dataset. None of these methods would be as effective as a line graph in presenting the trends of malaria cases over time.<br /><br />Therefore, the most appropriate method of data presentation for the researcher to use in this scenario is a line graph.