Mathematics Class 7
Connecting the Dots…
Find the mean, median, mode and range. Read dot plots and double-bar graphs.
14 lessons · ~95 min total
Track progress — 0 of 14 lessons read 0%
Lessons in this topic
- 0 Start here A roadmap: one number for a whole set, three ways to pick it, and which one to report. · 4 min You are here
- 1 One number for the whole lot A set of readings gets reported as one figure, and picking that figure is a real decision. · 6 min
- 2 Share it out equally The mean is the total, shared out equally. · 7 min
- 3 The middle one, once they are in order The median is the value sitting in the middle, once the values are in order. · 7 min
- 4 When two numbers share the middle An even count leaves two survivors, and the median sits halfway between them. · 6 min
- 5 The one that appears most The mode is the value that appears most often. A set may have two modes, or none. · 7 min
- 6 When one strange value pulls them apart A value far from the rest drags the mean toward it and leaves the median about where it was. · 9 min
- 7 Which one answers the question Three recipes, one question. The question decides which answer is honest. · 8 min
- 8 Dots on a number line Each reading becomes a dot. The plot shows ends, bunches and middles. · 8 min
- 9 How far apart are the ends The range is the gap between the largest and smallest readings. · 7 min
- 10 Two bars for every item Two bars for each item compare two groups side by side. · 8 min
- 11 Checkpoint Five quick checks before the big picture. · 5 min
- 12 The big picture Ten ideas, tied back together. · 5 min
- 13 Track quiz Cheat-sheet table plus a reveal quiz — one question per idea. · 8 min
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