Attempts Average: 13 4. Standard deviation and variance for a population Aa Aa Y

Question

Attempts Average: 13 4. Standard deviation and variance for a population Aa Aa You are interested in the development of language in bilinguals. You are able to locate five families in the world with 18-month-old toddlers who are learning both Swahili and Vietnamese simultaneously. Given that these are the only families that fit this qualification, therefore, these five families are your study population. You test the children to see how many words they can understand in Vietnamese. The results are listed in the following table Number of Words in Vietnamese 17 48 39 45 61 Toddler Calculate the mean for this population

Explanation / Answer

from above

mean =42

varaince =1040/5=208

std deviation =(208)1/2 =14.422

x (x-) (x-)2 17 -25 625 48 6 36 39 -3 9 45 3 9 61 19 361 total 210 1040 =total/n 42

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