Answer :
A histogram is the most useful tool for viewing the frequency of observations, featuring bars whose heights correspond to frequency values.the correct answer is option b. Histogram
The most useful tool for viewing the frequency or number of observations of a specific set of data is a histogram. This type of graph consists of bars of equal width that are drawn adjacent to each other. The horizontal scale represents different classes or ranges of the data, while the vertical scale represents the frequencies of those classes. The heights of the bars correspond to the frequency values, making histograms ideal for large, continuous, quantitative data sets. For categorical variables, which tend to have fewer categories, a bar graph could be more appropriate as it represents the frequencies of different categories, with the bars being either vertical or horizontal. .the correct answer is option b. Histogram
