A)Degrees of freedom for the chi-square test of independence is determined by??
1)subtracting 2 from the number of cells there are (k ? 2).
2)subtracting 1 from the number of cells there are (k ? 1).
3)multiplying the number of rows minus 1 times the number of columns minus 1.
4)subtracting 1 from the number of participants that there are (N ? 1).
B)To use a nonparametric test, it is appropriate to transform the data from scale to:?
3)the square root of the scale values.
4)the square root of the ratio values.
C)You find a Spearman correlation coefficient of ?0.58 between cleanliness ranking (high rank = very clean) and risk of infection ranking (high rank = high risk) from the SENIC data set. What can you conclude from these findings?
There is a fairly strong negative correlation between risk of infection and cleanliness rank, because patients were more likely to get an infection at hospitals with a low cleanliness ranking.
There is a fairly strong positive correlation between risk of infection and cleanliness rank, because as the rank for cleanliness increased, so did a patient's risk of infection.
There is no correlation between cleanliness of hospitals and risk of patient infection.
Unsanitary conditions at hospitals cause more infections in patients.
This question was answered on: Sep 18, 2020
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