Week 1 End Term MCQ's

Question 1

Q1. Based on the SPSS output, what is the mean score on the math test?
a) 100
b) 78
c) 83.55
d) 15.66

Answer 1

c) 83.55&raquo_space; Rationale: The Descriptive Statistics table clearly shows the mean for the ‘Math’ variable as 83.55. This value summarizes the central tendency of the dataset.

Question 2

Q2. What is the standard deviation for the math test scores in the SPSS output?
a) 15.66
b) 1.07
c) 83.55
d) 78

Answer 2

a) 15.66&raquo_space; Rationale: The standard deviation, as shown in the Descriptive Statistics table, is 15.661. This reflects the average spread of scores around the mean.

Question 3

Q3. How many participants completed the math test?
a) 78
b) 83
c) 100
d) 75

Answer 3

a) 78&raquo_space; Rationale: The ‘Valid N (listwise)’ row in the SPSS Descriptives output indicates 78 participants provided valid math scores.

Question 4

Q4. What type of measurement is used for the variable ‘Class’ in SPSS?
a) Nominal
b) Ratio
c) Ordinal
d) Scale

Answer 4

c) Ordinal&raquo_space; Rationale: ‘Class’ is coded as an ordered category (Essential < Standard < Extension) and is marked as ordinal in SPSS Variable View.

Question 5

Q5. What percentage of the sample is enrolled in Essential Math?
a) 32%
b) 44.9%
c) 14.1%
d) 41%

Answer 5

d) 41%&raquo_space; Rationale: The frequency table under ‘Level of math class’ shows 41% of participants are in Essential Math.

Question 6

Q6. Which math class had the smallest proportion of students?
a) Essential Math
b) Standard Math
c) Extension Math
d) All had equal numbers

Answer 6

c) Extension Math&raquo_space; Rationale: Only 14.1% of students were in Extension Math according to the Valid Percent column in the SPSS output.

Question 7

Q7. What is the mode of the ‘Class’ variable?
a) 1
b) 2
c) 3
d) Cannot be determined

Answer 7

b) 2&raquo_space; Rationale: The mode for ‘Class’ is 2, which corresponds to ‘Standard Math’, as it is the most frequent class in the frequency table.

Question 8

Q8. In the histogram for ‘Predicted’ scores, the distribution appears:
a) Symmetrical
b) Positively skewed
c) Negatively skewed
d) Bimodal

Answer 8

a) Symmetrical&raquo_space; Rationale: The histogram of ‘Predicted’ scores shows a roughly normal distribution, not positively skewed as one might expect.

Question 9

Q9. What is the mean of the ‘Predicted’ score variable?
a) 83.55
b) 75.02
c) 78
d) 16.45

Answer 9

b) 75.02&raquo_space; Rationale: The histogram notes the mean of ‘Predicted’ scores as 75.02, visible on the right side of the chart.

Question 10

Q10. The standard deviation of the ‘Predicted’ variable is:
a) 83.55
b) 15.66
c) 16.45
d) 75.02

Answer 10

c) 16.45&raquo_space; Rationale: The histogram output displays the standard deviation as 16.45 for the ‘Predicted’ variable.

Question 11

Q11. Based on the histogram for ‘Attendance’, what is the approximate mean?
a) 75
b) 100
c) 82.28
d) 41.0

Answer 11

c) 82.28&raquo_space; Rationale: The mean attendance is displayed on the histogram as 82.278, which corresponds to option c.

Question 12

Q12. Which of the following statements about the attendance distribution is TRUE?
a) There is no outlier
b) An outlier causes major skew
c) The outlier slightly affects mean
d) The outlier greatly influences shape

Answer 12

a) There is no outlier&raquo_space; Rationale: The histogram and follow-up assessment confirm that the outlier does not significantly skew the distribution.

Question 13

Q13. What is the minimum score on the ‘Math’ test?
a) 0
b) 15
c) 42
d) 58

Answer 13

c) 42&raquo_space; Rationale: The Descriptive Statistics table shows that the minimum score for the math test was 42.

Question 14

Q14. What is the range of the ‘Class’ variable?
a) 1
b) 2
c) 3
d) 4

Answer 14

b) 2&raquo_space; Rationale: The maximum is 3 and minimum is 1 for the ‘Class’ variable, so the range is 3 - 1 = 2.

Question 15

Q15. What is the variance of the ‘Class’ variable?
a) 0.485
b) 0.696
c) 2.0
d) 1.73

Answer 15

a) 0.485&raquo_space; Rationale: The variance is explicitly provided in the SPSS frequency statistics table for ‘Class’.

Question 16

Q16. What is the median of the ‘Class’ variable?
a) 1
b) 2
c) 3
d) Cannot be calculated

Answer 16

b) 2&raquo_space; Rationale: The median value of ‘Class’ is 2, meaning half of the students fall in Essential or Standard and half above or below Standard.

Question 17

Q17. Based on the histogram of ‘Predicted’ scores, which of the following is most accurate?
a) It is negatively skewed
b) It shows a bimodal pattern
c) It includes clear outliers
d) It is approximately normal

Answer 17

d) It is approximately normal&raquo_space; Rationale: The histogram shows a bell-shaped curve indicating a normal distribution with no clear skew or bimodality.

Question 18

Q18. What level of measurement is used for ‘Anxiety’?
a) Nominal
b) Ordinal
c) Interval
d) Scale

Answer 18

d) Scale&raquo_space; Rationale: SPSS marks ‘Anxiety’ as Scale, meaning it is a continuous, numeric variable suitable for parametric analyses.

Question 19

Q19. Which measure best summarizes the variability in ‘Math’ scores?
a) Mean
b) Mode
c) Standard Deviation
d) Variance

Answer 19

c) Standard Deviation&raquo_space; Rationale: The standard deviation (15.66) best describes variability around the mean in normally distributed data.

Question 20

Q20. How many students predicted their math score to be 100?
a) Cannot be determined
b) 3
c) 5
d) Requires histogram bin detail

Answer 20

d) Requires histogram bin detail&raquo_space; Rationale: The histogram does not label exact values for individual scores. Estimating how many students predicted 100 requires bin boundaries.