Question

if no additional information was given, which display type would not show the number of observations? bar graphs box plots dot plots histograms

Explanation:

Bar graphs show frequencies as bar - heights. Dot plots show each data point as a dot and can count them. Histograms show frequencies in intervals. Box plots display quartiles, median, etc. and do not inherently show the number of observations without additional info.

Answer:

B. box plots