Two data sets have the same mean. What does the one with the larger standard deviation have?
A
Machine A, because its outputs are less spread out.
B
- n=∑fn=\sum fn=∑f
- ∑x=∑fx\sum x=\sum fx∑x=∑fx
- ∑x2=∑fx2\sum x^2=\sum fx^2∑x2=∑fx2
C
Its large deviation is squared.
D
A greater spread around the mean.
2.2.6 Data presentation and interpretation Flashcards
Flashcards for WJEC A Level Maths 2.2.6 Data presentation and interpretation, covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 23 cards, matched to the WJEC A Level Maths (1300QS) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.