Final answer:
A peak in a histogram is the bar where the frequency is highest, a cluster is a group of bars with high frequency across intervals, and intervals with no bars represent a frequency of 0. Symmetrical histograms indicate evenly distributed data.
Step-by-step explanation:
When analyzing histograms, it's important to correctly interpret the graphical information presented. A peak in a histogram is not a bar that is lower than the others around it, nor does it represent where the frequency is lowest—rather, a peak is a bar that is higher than the other bars around it, signifying where the frequency of the data is the highest. A cluster refers to a group of adjacent bars where the frequency is consistently high across several intervals. When there are intervals on a histogram with no bars, this indicates that the frequency for those intervals is 0. Symmetry in a histogram does not suggest that data is clustered to the right; symmetrical data is evenly distributed across the center point.