队伍数据
- 数据处理
- Ages 9 to 14
- About 6 minutes
The story behind it
A team captain cannot pick a side by feeling alone. She looks at the scores: the total, the middle score, the one that keeps turning up, and how far apart the best and worst days are. Four small numbers that say a great deal.
How to play
- Look at the scores on the chart.
- Mean: the total shared equally. Median: the middle one in order.
- Mode: the most common. Range: highest take away lowest.
Levels
For teachers and coaches
Squad stats — Data handling
Ages 9 to 14 · about 6 minutes · 8by8verse Chess Lab
What it teaches
Mean, median, mode and range from a small data set, and what each one tells you.
The story to tell first
A team captain cannot pick a side by feeling alone. She looks at the scores: the total, the middle score, the one that keeps turning up, and how far apart the best and worst days are. Four small numbers that say a great deal.
Three questions to ask
- One very high score joins the list. Which changes more, the mean or the median?
- Two players have the same mean. How could you still tell them apart?
- When is the most common score more useful than the average?
Without a screen
Collect a real class data set — shoe sizes, minutes to school — and find all four numbers together.
Next
Finish
Hint
Step back
Start again
Play again
Next level
Back to the lab
Right.
Not quite.
Not yet — have another go.
Question {n} of {total}
{right} out of {total} right.
Three stars. Clean work.
Two stars. Well played.
One star. Level done.
king
queen
rook
bishop
knight
pawn
Puzzle scores of a made-up school team
Scores in five rounds
What is the team’s total score?
What is the mean score — the total shared equally?
The total is {t}. Shared by {k} players, that is {n}.
Put the scores in order. Which one is in the middle — the median?
In order: {s}. The middle one is {n}.
Which score turns up most often — the mode?
{n} appears {k} times.
What is the range — the highest score take away the lowest?
{hi} take away {lo} is {n}.
Who is the steadier player — the one whose scores have the smaller range?
{a} has a range of {x}. {b} has a range of {y}.