Measures of Central Tendency: Master the Basics for Nursing Research

Question 1

In the dataset {1, 2, 3, 4, 5, 6, 7}, the median is:

Accepted Answer

5

Answer

2

Answer

4

Answer

6

Question 2

The measure of central tendency that represents the value that appears most frequently is known as:

Accepted Answer

Mode

Answer

Mean

Answer

Median

Answer

Range

Question 3

The variance of a dataset is calculated by:

Accepted Answer

Dividing the sum of squared deviations by the degrees of freedom

Answer

Squaring the standard deviation

Answer

Taking the square root of the mean absolute deviation

Answer

Multiplying the range by the median

Question 4

In a negatively skewed distribution, the:

Accepted Answer

Mean is lower than the median

Answer

Mean is higher than the median

Answer

Mean is equal to the median

Answer

Median is higher than the mean

Question 5

Which dataset exhibits the smallest range?

Accepted Answer

[1, 3, 5, 7, 9]

Answer

[2, 4, 6, 8, 10]

Answer

[3, 5, 7, 9, 11]

Answer

[4, 6, 8, 10, 12]

Question 6

A nurse records a patient's temperature over a 24-hour period, resulting in the following readings: 98.6, 99.0, 98.8, 99.2, 98.4, 99.1. What is the median temperature?

Accepted Answer

99.0

Answer

98.6

Answer

98.8

Answer

99.1

Question 7

When dealing with a skewed dataset, which measure of central tendency is most appropriate to use?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Question 8

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

Accepted Answer

Standard deviation

Answer

Mean

Answer

Median

Answer

Mode

Question 9

In a negatively skewed distribution, which measure of central tendency is typically higher than the 'true' center of the data?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Question 10

Which measure of central tendency is heavily influenced by extreme values?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 11

The mean is calculated by dividing the sum of all values in a dataset by the:

Accepted Answer

Number of values

Answer

Number of unique values

Answer

Range of the data

Answer

Standard deviation

Question 12

Which measure of central tendency remains unchanged when the data values are rearranged?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Standard deviation

Question 13

The range is defined as the:

Accepted Answer

Difference between the highest and lowest values

Answer

Sum of all values

Answer

Number of unique values

Answer

Average of all values

Question 14

Which measure reflects the spread or variability of data values?

Accepted Answer

Standard deviation

Answer

Mean

Answer

Median

Answer

Mode

Question 15

The standard deviation measures the:

Accepted Answer

Dispersion of data values

Answer

Center of the data

Answer

Number of unique values

Answer

Difference between the highest and lowest values

Question 16

For skewed data distributions, which measure of central tendency is most reliable?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 17

The variance is calculated as the:

Accepted Answer

Square of the standard deviation

Answer

Difference between the mean and median

Answer

Number of data points that deviate from the mean

Answer

Average of the data values

Question 18

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

Accepted Answer

Percentile

Answer

Mean

Answer

Median

Answer

Mode

Question 19

In a symmetrical distribution, the mean, median, and mode are:

Accepted Answer

Equal

Answer

Different

Answer

Unrelated

Answer

Asymmetrical

Question 20

Which measure of central tendency represents the value that occurs most frequently in a distribution?

Accepted Answer

Mode

Answer

Range

Answer

Median

Answer

Mean

Question 21

A data set has the following values: 5, 7, 9, 9, 11, 13, 15. Identify the mode.

Accepted Answer

9

Answer

13

Answer

11

Answer

5

Question 22

Which measure of central tendency is calculated by summing all values in a data set and dividing by the number of values?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Question 23

Which measure of central tendency is calculated by adding up all values in a data set and dividing by the number of values?

Accepted Answer

Mean

Answer

Mode

Answer

Range

Answer

Median

Question 24

Which measure of central tendency is the middle value when a data set is arranged in ascending order?

Accepted Answer

Median

Answer

Mode

Answer

Mean

Answer

Range