STT102 Tma Questions
The following data were collected on ten infants. Fin the standard error, \[S_{yx}\]. Where\[ S_{yx}^2 = \sum_{i=1}^{10} {y_{i} – \hat y_{i}}^2\} \]and \[y_{i} \]are the observed values , \hat y_{i} are the predicted values
\[\S_{yx} = 5.75\]
\[\S_{yx} = 4,75\]
\[\S_{yx} = 2.75\]
\[\S_{yx} = 3.75\]
Given the general form of linear equation \[y = b + b_{1}X \]. If\[b_{1} > 0\], then the line slopes
downward
upward
flat
parallel
In the age distribution of Receipients of Nursing scholarship of 25, 21, 22, 20, 19, 30, 27, 28, 32 and 18. Determine the variance. (Hint: use\[ S^2 = \sum X – \bar {X}^2\]
215.6
251.6
225.6
252.6
Consider Attitude Scores for five newly admitted Nursing students towards alcoholic patients below: Attitude: 5, 4, 3, 2, 1 . The percentage due to attitude 3 is ________
0.5
0.4
0.2
0.3
The data below represent systolic blood pressure readings (mm Hg), using Spearman’s Rank Order Correlation method, determine correlation coefficient \[r_{s}\] of the two readings.
\[r_{s} = 0.23\]
\[r_{s} = -0.32\]
\[r_{s} = 0.32\]
\[r_{s} = -0.23\]
One Precaution in correlation is that _________
Correlation is a causation
Correlation is not a causation
Correlation does not apply to a range of values observed for two variables
Correlation means that one variable is not independent of the other
Determine Correlation Coefficient ‘r’ using the above values or from your direct-calculation
0.9
0.91
0.95
0.92
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