Question: answer question a - b 1. Each child in a study of infantile autism was given a behavioural test and graded on a scale from

answer question a - b

1. Each child in a study of infantile autism was given a behavioural test and graded on a scale from follows. 20 (mild symptoms) to 37 (maximum severity). The scores of the children in the study were as Score Frequency 24 25 26 27 5 28 29 30 31 32 33 34 35 36 37 Use the data above to calculate the following measures of central tendency and measures of spread. a) Find the median, first quartile, and third quartile for this data. (3 marks) b) Determine the interquartile range. (1 mark

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9. How much of the information collected will be used in decision-making?

1. Background knowledge of the subject and

4. What specific changes in the environment have taken place in relation to the information we have collected?