Brookside Quiz Scores

Brookside Quiz Scores — Dot Plot

This dot plot keeps each observation visible instead of reducing the sample to an average. Equal values stack vertically, making the most common measurements, gaps and potential outliers easy to find. The horizontal axis uses the unit relevant to the sample, while the vertical stacking only separates repeated observations; it is not a second measured variable. This format is especially useful for a small operational sample or a classroom dataset where exact values matter. The chart should be interpreted with its collection context in mind, including how observations were selected and whether the sample is representative. For larger datasets, grouping observations into bins can improve readability.

種類 散布図エンジン echarts-scatter更新日 2026/9/24

依頼内容

“Create a dot plot titled Brookside Quiz Scores for scores out of 20 of 9, 11, 12, 12, 13, 14, 14, 15, 15, 15, 16, 16, 17, 18 and 19, stacking equal values.”

次はこちらAdd the class median.Highlight scores below 12.

この図に含まれるもの

図の背後にある意思決定を読み解く。

01Scope

use the named categories and period.

02Labels

keep the title and units explicit.

03Interpretation

treat the example as a clear communication aid.

Use this dot plot for the stated comparison and audience.

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よくある質問

Why are dots stacked?

Stacking separates repeated values so their frequency is visible.

What does the horizontal axis show?

It shows the measured value for each individual observation.

When should I use a histogram instead?

Use a histogram when the dataset is large enough that individual dots become crowded.