A developmental psychologist studies the number of words that seven infants have

Question

A developmental psychologist studies the number of words that seven infants have learned at a particular age. The numbers are 10, 12, 8, 0, 3, 40, and 18 . Figure the (a) mean, (b) median, and (c) standard deviation for the number of words learned by these seven infants. (d) Explain what you have done and what the results mean to a person who has never had a course in statistics.



A developmental psychologist studies the number of words that seven infants have learned at a particular age. The numbers are 10, 12, 8, 0, 3, 40, and 18 . Figure the (a) mean, (b) median, and (c) standard deviation for the number of words learned by these seven infants. (d) Explain what you have done and what the results mean to a person who has never had a course in statistics.



A developmental psychologist studies the number of words that seven infants have learned at a particular age. The numbers are 10, 12, 8, 0, 3, 40, and 18 . Figure the (a) mean, (b) median, and (c) standard deviation for the number of words learned by these seven infants. (d) Explain what you have done and what the results mean to a person who has never had a course in statistics.

Explanation / Answer

Number of words learned by infants

Mean

Median

Standard deviation

10

13

10

13.279

12

8

0

3

40

18

We have done descriptive statistics to find the measures of central tendency; we have inferred that the average number of words learned by the infants of this age group is 13. The middle value is 10 i.e. median. However, the variability of this observation is; 13.279

Number of words learned by infants

Mean

Median

Standard deviation

10

13

10

13.279

12

8

0

3

40

18

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