ExpertEasy1 markMultiple Choice
AQA GCSE · Question 03 · Data Visualization and Representation
Circle the word that completes this sentence correctly.
This diagram shows data with a negative __________ .
Circle the word that completes this sentence correctly.
This diagram shows data with a negative __________ .
Answer options:
A.
median
B.
skew
C.
range
D.
mode
How to approach this question
Look at the shape of the distribution curve. A symmetrical curve has no skew. If the "tail" of the curve is longer on the left side, it has a negative skew. If the tail is longer on the right side, it has a positive skew. Identify which of these describes the given diagram.
Full Answer
B.skew✓ Correct
skew
Skewness refers to the asymmetry in a statistical distribution. In the given diagram, the peak (mode) is to the right of the centre, and the tail of the distribution is longer on the left side. This is known as a negative skew or left-skewed distribution. The mean is typically less than the median, which is less than the mode in a negatively skewed distribution.
Common mistakes
✗ Confusing negative and positive skew. A positive skew has a long tail to the right.
✗ Choosing another statistical term like median or mode, which are measures of location, not shape.
Practice the full AQA GCSE Statistics Foundation Tier Paper 1
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