Ideas for Statistics Day 2009
Workshop 1
Timing
Detail
Resources
30 mins
Explore Situation 1
For the investigative question.

Do the popliteal lengths of boys at Karekare College tend to be greater than the popliteal lengths of girls at Karekare College.

Take a random sample of 30 boys and 30 girls from the Karekare College population.

Give a dot plot of the data.

Descriptions:
We need to describe the features we see in the data.
Starting point:
• Overall visual non-numerical comparisons
o Overlap
o Shift
o Unusual features

After the initial overall visual non-numerical comparisons:
Make more detailed comparative descriptions of the features including use of summary statistics and specific observation values where appropriate
Reflect and perhaps comment on these features using “I wonder . . .” and “I expect . . .” type statements, i.e., comment on any inferential thoughts

Comparisons are made:
Between the groups (e.g., overlap, shift, spread and shape statements)
Within each group (e.g., unusual observations)
Karekare College
KarekareCollegedatacards.xls
karekarecollege.ftm
Workshop 2
||
Timing
Detail
Resources
30 mins
Explore Situation 1
For the investigative question.

Do the popliteal lengths of boys at Karekare College tend to be greater than the popliteal lengths of girls at Karekare College.

Take a random sample of 30 boys and 30 girls from the Karekare College population.

Give a dot plot of the data.

Descriptions:
We need to describe the features we see in the data.
Starting point:
• Overall visual non-numerical comparisons
o Overlap
o Shift
o Unusual features

After the initial overall visual non-numerical comparisons:
Make more detailed comparative descriptions of the features including use of summary statistics and specific observation values where appropriate
Reflect and perhaps comment on these features using “I wonder . . .” and “I expect . . .” type statements, i.e., comment on any inferential thoughts

Comparisons are made:
Between the groups (e.g., overlap, shift, spread and shape statements)
Within each group (e.g., unusual observations)
Karekare College
KarekareCollegedatacards.xls
karekarecollege.ftm