#### 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

**Find the value of S_{w1w2} in question one above**

4135

4235

4335

4325

**From the above, evaluate \S_{w2w2}.**

2440

2410

2420

2430

**This is for Questions 1 to 4. Two weekly scores of a students are as below <> . Find \S_{w1w1}**

6250.25

6150.5

6312.5

6300.5

**Given that X = 20, 30, 40, 50, 60. Find \[\bar X \].**

40,

30,

35

45

**Consider this distribution 12, 20, 13, 15, 17, 15, 18. Find \[\bar X_{m}\], where \[\bar X_{m}\] is as earlier defined.**

9

11

13

15

**Let \[\bar X_{m}\] be the Median Score, Determine \[\bar X_{m}\] in 15, 13, 15, 12, 12, 16, 15, 14, 13**

10

12

14

16

**Suppose \X_{m} is the Mode. Find \X_{m} in 15, 13, 15, 12, 12, 16, 15, 14, 13.**

11

13

15

17

**Take X = 29, 27, 28, 30, 35. Evaluate \bar {X}**

29.8

39.8

49.8

59.8

**Suppose X = 10, 12, 8, 7, 5. Find the value of (\[\sum{i=1}^{5} X_{i}-2)^2\]**

204

214

224

234

**If X=10, 12, 8, 7, 5. Evaluate {1} \{3} \[\sum{i=1}^{5} X_{i}\]**

192

196

200

204

**Determine [ \sum{i=1}^{5} X_{i}]^2 if X = 10, 12, 8, 7, 5**

1265

1764

1785

1951

**Let Y = 2, 5, 6, 7. Find \sum{j=1}^{4} Y_{j}**

114

120

125

141

**If X=10, 12, 8, 7, 5 Determine \sum{i=1}^{5} X_{i}**

40

41

42

43

**Given that X = 20, 30, 40, 50, 60. Find \[\bar X \].**

40,

30,

35

45

**Consider this distribution 12, 20, 13, 15, 17, 15, 18. Find \[\bar X_{m}\], where \[\bar X_{m}\] is as earlier defined.**

9

11

13

15

** Let \[\bar X_{m}\] be the Median Score, Determine \[\bar X_{m}\] in 15, 13, 15, 12, 12, 16, 15, 14, 13**

10

12

14

16

**Suppose \X_{m} is the Mode. Find \X_{m} in 15, 13, 15, 12, 12, 16, 15, 14, 13.**

11

13

15

17

**Take X = 29, 27, 28, 30, 35. Evaluate \bar {X}**

29.8

39.8

49.8

59.8

**Suppose X = 10, 12, 8, 7, 5. Find the value of (\[\sum{i=1}^{5} X_{i}-2)^2\]**

204

214

224

234

**If X=10, 12, 8, 7, 5. Evaluate {1} \{3} \[\sum{i=1}^{5} X_{i}\]**

192

196

200

204

**Determine [ \sum{i=1}^{5} X_{i}]^2 if X = 10, 12, 8, 7, 5**

1265

1764

1785

1951

**Let Y = 2, 5, 6, 7. Find \sum{j=1}^{4} Y_{j}**

114

120

125

141

**If X=10, 12, 8, 7, 5 Determine \sum{i=1}^{5} X_{i}**

40

41

42

43

**The scores obtained by 10 students in a practical class are as follows: 20, 50, 30, 40, 60. The mean score is _________**

50

45

40

30

**In the distribution having classes 0-4 5-9 10-14 15-19 20-24 . . . The upper class boundary for class 3 is _____________**

12.5

13.5

14.5

15.5

**Mean, Median and Mode are measures of _______________________**

Position

Location

Placement

Category

**In attitude test, the scores for 5 newly students are as stated here, Attitude: 5, 4, 3, 2, 1. The percentage attributable to attitude of score 3 is**

22%

27%

25%

20%

**Cluster Sampling is one whose members are ___________________________**

Centrifugal

Homogeneous

Exterogeneous

pathogeneous

**Systematic Sampling is a completely random sampling method**

No

Yes

No Idea

Non of the above

**Simple Random Sampling (SRS) is one for which each possible sample is _______ likely to be selected**

Equally

Unequally

Simultaneously

particularly

**The sample characteristics is _________________**

Statistic

sample

Statistics

Parameter

** _________ is a population characteristics**

Statistic

sample

Phenomenon

Parameter

**Statistics is the _____________ that deals with data collection, and summarising facts which are expressible in numerical form**

Corollary

Science

Modern

Theory

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