Measures of Central Tendency: Interactive Learning Quizzes for Pharmacy Students

Question 1

Which measure of central tendency is **least affected** by extreme values (outliers) in a dataset?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 2

How does the standard deviation of a dataset help us understand the spread of data points around the mean?

Accepted Answer

It measures how much the data varies from the mean.

Answer

It shows the highest and lowest values in the dataset.

Answer

It identifies any unusual values that may affect the mean.

Answer

It describes whether the data is evenly distributed on both sides of the mean.

Question 3

What is a potential drawback of using the standard deviation to measure data spread?

Accepted Answer

It can be significantly influenced by outliers in the data.

Answer

It is not suitable for comparing data sets with different units of measurement.

Answer

It is not sensitive to changes in the data set.

Answer

It cannot be used to make probabilistic statements about the data.

Question 4

In pharmacy practice, how is the mean utilized to analyze medication regimens?

Accepted Answer

Calculating the average daily dose for optimal dosing intervals

Answer

Identifying the most frequently prescribed medication

Answer

Determining patient weight variability in clinical trials

Answer

Comparing medication effectiveness for specific conditions

Question 5

For data with a skewed distribution, which measure of central tendency is the most appropriate?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 6

Which of the following is not considered a measure of dispersion?

Accepted Answer

Mean

Answer

Range

Answer

Standard deviation

Answer

Variance

Question 7

Calculate the range for the following dataset: 2, 5, 8, 10, 13

Accepted Answer

11

Answer

3

Answer

8

Answer

15

Question 8

Identify the measure of central tendency most susceptible to the influence of outliers.

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 9

For the dataset 2, 4, 4, 6, 8, determine the mode.

Accepted Answer

4

Answer

2

Answer

6

Answer

8

Question 10

Which of the following is NOT a measure of dispersion?

Accepted Answer

Mean

Answer

Standard deviation

Answer

Variance

Answer

Range

Question 11

Interpret the following statement: 'The mean number of prescriptions dispensed by a pharmacist each day is 12'.

Accepted Answer

On average, each pharmacist dispenses 12 prescriptions per day.

Answer

Half of the pharmacists dispense exactly 12 prescriptions per day.

Answer

The majority of pharmacists dispense more than 12 prescriptions per day.

Answer

The mean is not a useful measure in this context.

Question 12

Define the standard deviation of a dataset.

Accepted Answer

The average distance between data points and the mean

Answer

The difference between the highest and lowest values

Answer

The number of data points in the dataset

Answer

The sum of all data points divided by the mean

Question 13

Calculate the median of the following data: 10, 12, 15, 13, 14.

Accepted Answer

13

Answer

10

Answer

12

Answer

14

Question 14

Which measure of central tendency is least affected by outliers?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 15

Which of the following is the sum of the squared deviations from the mean?

Accepted Answer

Variance

Answer

Standard deviation

Answer

Zero

Answer

Range

Question 16

Calculate the range of the following data set: 0, 5, 10, 15, 20.

Accepted Answer

20

Answer

10

Answer

15

Answer

5

Question 17

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

Accepted Answer

Standard deviation

Answer

Median

Answer

Mean

Question 18

Which measure of central tendency is most affected by outliers?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 19

Which measure of central tendency is the most appropriate for ordinal data?

Accepted Answer

Median

Answer

Mode

Answer

Mean

Answer

Standard deviation

Question 20

Which of the following measures of central tendency is most useful for making comparisons between different datasets?

Accepted Answer

Mean

Answer

Range

Answer

Mode

Answer

Median

Question 21

A dataset has a mean of 10 and a variance of 4. What is the standard deviation?

Accepted Answer

2

Answer

4

Answer

1

Answer

3

Question 22

Which of the following is true about the relationship between mean and median?

Accepted Answer

They are always equal in a normal distribution.

Answer

They are always different in a skewed distribution.

Answer

They are always different in a bimodal distribution.

Answer

They are always equal in any distribution.