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Visualize data distribution with interactive frequency histograms. Analyze central tendency, spread, and patterns in your data.
All calculations are processed locally. Your data never leaves your browser.
Histograms reveal the shape of your data distribution at a glance. Identify whether your data is normal, skewed, bimodal, or follows other patterns critical for quality decisions.
Get instant calculations of mean, median, standard deviation, and range. These statistics help you understand central tendency and variation in your process.
Fine-tune your histogram with adjustable bin counts. More bins reveal detail; fewer bins show the overall pattern. Find the right balance for your analysis.
Create Histograms to visualize data distribution patterns. Analyze central tendency, spread, and variation in your data. Calculate mean, median, standard deviation with our free online histogram generator.
A Histogram is a bar chart that shows the frequency distribution of continuous data. Unlike regular bar charts, histogram bars touch each other because the data is continuous, not categorical.
Histograms are essential for understanding process capability. They show whether your data falls within specification limits and reveal sources of variation that might not be obvious from summary statistics alone.
A symmetric, bell-shaped histogram suggests a normal distribution—ideal for many processes. Left or right skew indicates systematic bias. Bimodal distributions (two peaks) often mean two different processes are mixed in your data.
Cliffs at specification limits might indicate sorting or 100% inspection. Gaps or isolated bars could signal measurement issues or data recording errors.
Use Histograms with Control Charts to understand process variation. Combine with Pareto Charts to see which defect categories contribute most to problems. Check Sheets provide the raw data that Histograms visualize.
Export your frequency data as CSV for further analysis or reporting—all free with Zrubix TQM Tools.
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