ICT-Based Quiz MED 105

Which of the following is NOT a measure of central tendency?

• Mean

• Standard deviation

• Median

• Mode

In educational research, qualitative data is best represented using:

• Frequency polygons

• Descriptive statistics

• Inferential statistics

• Bar charts

If a student's percentile rank is 85, it means:

• The student scored 85 marks in the test.

• The student scored higher than 85% of students.

• The student was in the 85th position.

• The student scored 85% of the total marks.

Which correlation method should be used when dealing with ordinal data?

• Pearson's correlation

• Spearman's rank correlation

• Regression analysis

• Chi-square test

A normal distribution curve is:

• Positively skewed

• Negatively skewed

• Symmetrical around the mean

• Bimodal

If a dataset has a high positive kurtosis, it means:

• The distribution is flatter than normal

• The distribution has heavier tails than normal

• The distribution is negatively skewed

• The mean and median are equal

In hypothesis testing, a Type I error occurs when:

• The null hypothesis is rejected when it is actually true

• The null hypothesis is accepted when it is actually false

• The alternative hypothesis is rejected when it is true

• There is no error in decision-making

If the z-score of a test score is +2.5, it means that the score is:

• 2.5 points above the mean

• 2.5 standard deviations above the mean

• 2.5 percent higher than the average score

• The highest score in the distribution

In a one-way ANOVA test, the independent variable must have:

• Two categories

• Three or more categories

• Only numerical values

• Only ordinal values

The Chi-square test is used to:

• Compare means of two groups

• Determine the relationship between two categorical variables

• Measure the spread of a dataset

• Find the correlation between variables