Question 87

The primary purpose of a pictograph key or legend is to convey the value of each symbol or icon used in the pictograph.

A pictograph key or legend serves to clarify what each symbol or icon represents in terms of value, making it essential for understanding the data being presented.

A) Informing the user what general information the pictograph is communicating

While this option suggests a role for the key or legend, it does not accurately reflect its primary purpose. The key specifically provides detailed information about the values associated with each symbol, rather than just general information.

B) Conveying the value of each symbol or icon used in the pictograph

This option accurately describes the primary function of a pictograph key or legend. It provides essential information about what each symbol represents, thereby facilitating a clearer understanding of the data being visualized.

C) Communicating the total number of symbols used in the pictograph

This option is incorrect as it misrepresents the function of the key or legend. The key does not provide a count of symbols; instead, it explains what each symbol signifies in terms of data values.

D) Giving the user the date and source of the data used to make the pictograph

Although providing the date and source is important in data representation, this information is not typically included in the key or legend of a pictograph. The primary focus of the legend is to explain the symbols used.

Conclusion

The correct answer is clearly option B, as it pinpointed the essential role of a pictograph key or legend in conveying the specific values of symbols or icons. Other options either misinterpret the function of the key or provide irrelevant information, thus failing to address the core purpose of the pictograph's legend.