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SISC/QSF Rev. 000 8/27/19-OCD- 055 Psychological Statistics
Name:^ FLEX-FT Final Assessment Student No.:
Course: Date: Integrity is one’s refusal to cheat. My actions define my character. _____________________ Name and Signature of Student_____ PART I answer from the choices given. [: Multiple Choice. Read 15 and analyse each item carefully. Select the bestpoints]
- This is a parametric test of relationship that measures the relationship between 2 variables a. Spearman’s rho b. c. d. Pearson’s rKruskallShapiro--WilkWallis
- A parametric test of difference that examines the differences in mean dependent variable across a single group with different conditions. a. Within-group t-test b. c. d. BetweenMannWilcoxon Signed Ranks-Whitney U test-group t-test
- Height of pre a. b. NominalOrdinal-school in centimetres refers to which level of measurement?
- Rosenberg's Self^ c.^ d.^ IntervalRatio -Esteem Scale on a Likert scale is what kind of level of measurement? a. b. NominalOrdinal
- Number of medals earned by each country in the 202^ c.^ d.^ IntervalRatio 4 Summer Olympics in Paris a. is referring to which level of measurement?Nominal
B
A
D
B
DBB
b. c. d. OrdinalIntervalRatio
- A local animal shelter keeps track of the breeds of tigers that came in. This is case is an example of which level of measurement? a. Nominal b. c. d. OrdinalIntervalRatio
- A type of bias wherein an individual has a tendency to agree to all statements, regardless of their content. a. Social desirability b. c. d. Halo effectCentral tendency errorAcquiescence
- Which of the following statement is correct in discussing the test of normality? a. b. c. W(83) =D(63) = 0.590, p=0.093 denotes that the data is not normally distributedW(37) = 0.184, p=0.032 denotes that the data is not normally distributed 0.242, p=0.151 denotes that the data is normally distributed.
- If the kurtosis of the data is zero, which is the correct kurtosis?^ d. a. D(50) = 0.332, p=0.129 denotes that the data is normally distributedLeptokurtic b. c. d. PlatykurticMesokurticEcokurtic
- The data is normally distributed; the independent variable has 3 or more distinct groups. Which statistical test should be used? a. One-way Analysis of variance b. c. d. Multiple Analysis of varianceMultiple linearIndependent t- (^) testregression
- If there is one predictor and the data is normally distributed, this statistical treatment should be used. a. Multiple linear regression b. c. d. Simple linear regressionKolmogorovIndependent t-Smirnov test-test
- This is the non a. b. MannWilcoxon Signed Rank-Whitney U test-parametric alternative to independent t-test
- The study has fifty (50) respondents. The normality?^ c.^ d.^ KolmogorovKruskall-Wallis-Smirnov researcher should use which test of a. b. c. KolmogorovShapiroLevene’s test-Wilk-Smirnov
D D C B A B A B
A
- Discuss the test of normality (2 points)Based on the test of normality, what statistical test are we going to use to test the relationship?
- Refer to the table above and report the most applicable test of relationship (2 points)
Spearman's rho^ GPA : D(64) = .384, p=.000 (<.05) - not normally distributed^ Anger: D(64) = .088, p=.200 (>.05) - normally distributed
The tables suggests a negative low correlation between the two varialbes. Since the p-value is greater than 0.05 significance level, this suggest that there is no significant relationship between Anger level and GPA.^ rs(64)= -.193, p=.
CASE 2 significant difference in terms of neuroticism at a 0.0 reported to be normally distributed.: Researchers at the Alida institute wanted to know if one’s marital status has a5 level of significance? Data was
- Based on the Levene’s a. Since the p assumed to be equal-value is greater than 0.05 significance level, variances are test, what does it tell us? b. c. Since the p assumed not equalSince the p--value is less than 0.05 significance level, variances arevalue is less than 0.05 significance level, the data is parametric d. Since the p assumed not equal-value is greater than 0.05 significance level, variances are
- Does the data show significant evidence to conclude that neuroticism has a significant difference in terms of marital status? Discuss. [2 points]Which post hoc analysis should be used based on the given data? (Discuss if applicable; otherwise type N/A if not applicable).
A
in terms of marital status.^ • Since the p-value is less than 0.05 level of significance, this suggests that there is a significant difference in neuroticism^ 22. F(2,12) = 8.667, P=.005 (p<.05) 23. Assuming that the data is normally distributed, since the homogeneity tests showed that it can be assumed to be equal, we can use Tukey HSD test.
- Based on the table, is the model significantly better at Discuss (2 points) predicting the outcome?
- Discuss the gradient. (2 points) CASE 4 and positive affect among points] : Captain Owen Strand his firemen and paramedics stationed wanted to know the relationship between depression at the Firehouse 126. [ Refer to this image in answering the following items
- How many respondents took part in the study? (1 point)What is the strength of the relationship between (1 point) the variables stated in the case?
- What conclusion can be made with the variables at the 0.05 significance level? (2points)
outcome than some random method, F(1, 71) = 15.607, p < 0.001.^ The table indicates that the regression model is significantly better at predicting For each one-unit increase in stress level, the quality of life scores decreases by .562. t = -13.951, p<0.001.Therefore, stress levelsignificantly contribute to the variance in quality of life.
Negative low correlation^30 Since the p-value is greater than 0.05 significance level, this suggest that there is no significant relationship between Depression and Positive Affect.
CASE 5 of the respondents when grouped according to gender [8 points]: Dr. Lee wanted to know if there is a significant difference in the quality of life
- Discuss the test of normality (2 points)Which statistical test should we use? a. Independent t-test b. c. d. Related tWilcoxon Signed RanksMann-Whitney-test U test
- Discuss the mean scores. Based on this table, can we already conclude that is significantly higher than the other? Justify [3 points]
- At the 0.05 level of significance, can we conclude that there is a significant difference between gender and quality of life? Justify. [2 points]
A^ Female: W(22) = .954, p=.371 - Normally distributed^ Male: W(13) = .951, p=.612 - normally distributed
The mean indicates that the Quality of life is higher for female. However we cannot conclude whether the difference is significant yet.
quality of life when grouped according to sex.^ Since the p-value is greater than the.05. level of significance, the table suggests that there is no significant difference on
