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What is the main visual difference between a histogram and a bar graph?

Class 9Bar Graphs and HistogramsStatistics and Probability
  • AHistogram bars touch each other (no gaps); bar-graph bars have gaps
  • BHistogram bars always have gaps
  • CBar graphs have no bars
  • DThere is no difference

Step-by-Step Solution

Because class intervals are continuous, histogram bars are adjacent with no gaps, unlike bar graphs.
Answer: A) Histogram bars touch each other (no gaps); bar-graph bars have gaps

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