# Number of Observations

## Interactive practice questions

Ms Barnett has just marked a set of homework. The scores she gave were:

$99,26,36,31,2$99,26,36,31,2

How many pieces of homework did Ms Barnett mark?

$\editable{}$
Easy
Less than a minute

Aaron has been recording the number of goals he has scored in soccer matches so far this year.

$1,2,4,2,3,4,2,2,1,3,2$1,2,4,2,3,4,2,2,1,3,2

Hannah has been trying to find out the number of m&m's that are in an average sized bag. The bar graph below shows the recorded number of m&m's found in each bag she has checked.

The frequency polygon below shows the scores awarded to a mathletes team during several recent competitions.

### Outcomes

#### S5-1

Plan and conduct surveys and experiments using the statistical enquiry cycle:– determining appropriate variables and measures;– considering sources of variation;– gathering and cleaning data;– using multiple displays, and re-categorising data to find patterns, variations, relationships, and trends in multivariate data sets;– comparing sample distributions visually, using measures of centre, spread, and proportion;– presenting a report of findings