Univariate Data

State whether the scores in each histogram are positively skewed, negatively skewed or symmetrical (approximately).

a

Positively skewed

A

Symmetrical

B

Negatively skewed

C

Positively skewed

A

Symmetrical

B

Negatively skewed

C

b

Positively skewed

A

Negatively skewed

B

Symmetrical

C

Positively skewed

A

Negatively skewed

B

Symmetrical

C

c

Negatively skewed

A

Symmetrical

B

Positively skewed

C

Negatively skewed

A

Symmetrical

B

Positively skewed

C

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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