D2.2 Make and test predictions about the likelihood that the mean, median, and mode(s) of a data set will be the same for data collected from different populations.
Skill: Making and Verifying Predictions
Data may differ between populations. If two populations are similar, the modes of the two data sets are likely to be the same and the means will be relatively close. Data can be used to make predictions that are not based on personal opinions or feelings.
Example
Predictions based on analysis of collected data
- Most of the students in my class read fiction books, not non-fiction books. I think students in other Grade 4 classes will also prefer fiction stories.
- This week, on average, the students in my class engaged in their favourite activity for 20 minutes a day, and I think it's likely that this average will be the same next week.