EBS 348SW QUIZ

A researcher conducts a study to find out how many sessions learners had with an academic counsellor in the previous year. Five learners participated in the study and the numbers of visits they made were 2, 5, 7, 4 and 2. Which of the following statements is TRUE? The ...............

• mean number of sessions is 2

• median number of sessions is 2

• median number of session is 4

• modal number of session is 4

Which of the following statements is most likely to be true if the distribution of a variable is negatively skewed? The ..........

• mean will be the best measure of the central tendency

• median will be as misleading as the mean

• median will be the best measure of central tendency

• mode will no longer be the most common response

If the scores on a variable are normally distributed, which of the following statement is false?

• All scores on the variable will have been observed with equal frequency

• The distribution of scores is symmetrical about the mean

• The mean, median and modal scores will be equal

• There will be relatively few extreme scores

A numerical value used as a summary measure for a sample, for example, the variance of 16 out of 45 students is known as a ...........

• population parameter

• population variance

• sample parameter

• sample statistic

The sum of mean deviation of a data set will always be ...............

• hundred

• one

• undefined

• zero

In a six-numbered summary, which of the following is less likely to be used for data summarization? The......................

• 25th percentile

• 50th percentile

• largest value

• mean

Given that the correlation coefficient between self-efficacy and the academic performance of students is 0.8. This means that............ of the variance in academic performance is explained by self-efficacy

• 4%

• 8%

• 16%

• 64%

If the heights BS3 learners follow a normal distribution with a mean of 52 inches and a standard deviation of 2.5inches, what is the z score of a BS3 learner who is 47 inches tall?

• -5

• -2

• 2

• 5

The order in which participants complete a task is an example of what level of measurement?

• Interval

• Norminal

• Ordinal

• Ratio

If a learner had 10 to secure the 97th percentile in an examination, it means that your position is below ................. percent of the total candidates who had appeared in the examination.

• 3

• 10

• 90

• 97