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lecture_18_f01

# lecture_18_f01 - Statistics 400 Lecture 18 Last Day ANOVA...

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Statistics 400 - Lecture 18

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Last Day: ANOVA Example, Paired Comparisons Today: Re-visit boy’s shoes...Randomized Block Design
Example (Boys Shoes) Company ran an experiment to determine if a new synthetic  material is better than the existing one used for making the soles of  boys' shoes Experiment was run to see if the new, cheaper sole wears at the  same rate at which the soles wear out

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Example (Boys Shoes) 10 boys were selected at random Each boy was given a pair of shoes Each pair had 1 shoe with the old sole (Sole A) and 1 shoe with the  new sole (sole B) For each pair of shoes, the sole type was randomly assigned to the  right or left foot
Data A B 13.20 14.00 8.20 8.80 10.90 11.20 14.30 14.20 10.70 11.80 6.60 6.40 9.50 9.80 10.80 11.30 8.80 9.30 13.30 13.60

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SOLE WEAR 16 14 12 10 8 6
Can we use a 2-sample t-test or ANOVA here? Would the 2-sample t-test or ANOVA detect a significant  difference?

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Paired or Matched Pairs T-test Situation: Two measurements made on same experimental unit Compute difference (say B-A) in observation on the same experimental
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lecture_18_f01 - Statistics 400 Lecture 18 Last Day ANOVA...

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