5 questions to be answered.

An educational researcher is interested in which devices students use for online courses. She collects the following data using her university's learning platform analytics tools:

• The device each student uses (computer, tablet, phone).
• How many times each student has logged in this semester.
• The total amount of time each student has logged in.
• Each student's current letter grade (A, B, C, D, or F) in the class.

Her initial evaluation of the number of times students have logged in finds that the data is positively skewed.

Which of the following describes the relationship between the mean and median in this case?

Group of answer choices

The mean and the median are equal

The mean is greater than the median

The mean is less than the median

The mean cannot be calculated on skewed data

The research finds the median value of the students' letter grades in her sample, what does this tell her?

Group of answer choices

Nothing, the median is not an appropriate statistic for this data type

The most common grade in her sample

The grade at the 50^th percentile of her sample

The average grade in her sample

The research finds the median value of the students' letter grades in her sample, what does this tell her?

Group of answer choices

Nothing, the median is not an appropriate statistic for this data type

The most common grade in her sample

The grade at the 50^th percentile of her sample

The average grade in her sample

Which of the following would be the most appropriate way to summarize the distribution of devices used by the students?

Group of answer choices

Frequency counts of each device

The relationship between the devices

The median device value

Mean and standard deviation of each device category

Which of the following would be the most appropriate way to summarize the distribution of devices used by the students?

Group of answer choices

Frequency counts of each device

The relationship between the devices

The median device value

Mean and standard deviation of each device category

Match each of the variables with their appropriate data type.(nominal, continuous, ordinal, or discrete to match)

Device used.

Total logins

Amount of time logged in

Current letter grade (A, B, C, D, or F

The researcher finds that some students logged into the system for very brief amounts of time to download/print materials. As a result, there are some extreme outliers on the lower end of the data set.

Which of the following is the best measure of central tendency to describe this variable?

Group of answer choices

The mean because it accounts for the extreme values

The median because it is not impacted by extreme values

The median because it accounts for the extreme values

The mean because it is not impacted by extreme values