Parameters of a Frequency Distribution

Question 1

A sample is the average value, or the sum (Σ) of all the observed values divided by the total number of observations (N)

Answer 1

Mean

Question 2

Most descriptive analyses of continuous variables and advanced statistical analyses use the mean as the measure of central tendency.

Answer 2

Mean

Question 3

A sample is the middle observation when data have been arranged in order from the lowest value to the highest value.

Answer 3

Median

Question 4

The most commonly observed value in a data set is called the mode. The mode is of some clinical interest, but seldom of statistical utility.

Answer 4

Mode

Question 5

Used to identify a measure of center.

Answer 5

Midrange

Question 6

Mostly used in statistics where it is the spread of the numbers or data from the lowest to the highest value.

Answer 6

Range

Question 7

It is the square root of variance, usually is used to describe the amount of spread in the frequency distribution.

Answer 7

Standards Deviation

Question 8

Standardized measure of dispersion of a probability distribution or frequency distribution.

Answer 8

Relative Standard Deviation

Question 9

Indicates the number at which a certain percentage of data falls below; percentiles are on version of measuring the variability within a data set.

Answer 9

Percentiles

Question 10

Form of percentiles that split the data up into groups of 10%.

Answer 10

Deciles

Question 11

Similar to deciles, a form of percentiles.

Answer 11

Quartiles

Question 12

Commonly referred to as an AVERAGE.

Answer 12

Measure of Central Tendency

Question 13

It is single value that represents a data set.

Answer 13

Measure of Central Tendency

Question 14

3 Different measures of Central Tendency

Answer 14

Mean
Median
Mode

Question 15

often called as the mean.

Answer 15

Arithmetic Mean

Question 16

It is appropriate to determine the central tendency of an interval or ratio data.

Answer 16

Arithmetic Mean

Question 17

It is affected by the extreme small or large values on data set.

Answer 17

Mean

Question 18

It is the most appropriate in symmetrical data.

Answer 18

Mean

Question 19

It is particularly useful when various classes or groups contribute differently to the total.

Answer 19

Weighted Mean

Question 20

It is found by multiplying each value by its corresponding weight and dividing by the sum of weights.

Answer 20

Weighted Mean

Question 21

A set of n positive numbers is defined as the nth root of the product of the n numbers.

Answer 21

Geometric mean

Question 22

It is the grand mean of all the values in all groups when two or more groups are combined.

Answer 22

Combined Mean

Question 23

This is the midpoint of the data array.

Answer 23

Median

Question 24

When the data set is ordered whether ascending or descending, it is called.

Answer 24

Data array

Question 25

It is an appropriate measure of central tendency for data that are ordinal or above, but is more valuable in an ordinal type of data.

Answer 25

Median

Question 26

Always exists and unique.

Answer 26

Median

Question 27

Can be calculated for any quantitative and some qualitative variables.

Answer 27

Median

Question 28

data set has only one value that occur the greatest frequency.

Answer 28

Unimodal

Question 29

if the data has two values with the same greatest frequency.

Answer 29

Bimodal

Question 30

If the data set have more than two modes.

Answer 30

Multimodal

Question 31

data set of values have the same number frequency.

Answer 31

No mode

Question 32

It is the easiest average to compute.

Answer 32

Mode

Question 33

PURPOSE: Locates the center of a data set.

Answer 33

Measures of Central Tendency

Question 34

It is appropriate measure of central tendency for data that are ordinal or above but is more valuable in an ordinal type of data. [measure of central tendency]

Answer 34

Median

Question 35

Most appropriate in a skewed data. [measure of central tendency]

Answer 35

Median

Question 36

Can be applied for ordinal, interval, and ratio data. [measure of central tendency]

Answer 36

Median

Question 37

Can be computed for an open-ended frequency distribution. [measure of central tendency]

Answer 37

Median

Question 38

A data may not contain any more if none of the values is “most typical.” [measure of central tendency]

Answer 38

Mode

Question 39

Found by locating the most frequently occurring value. [measure of central tendency]

Answer 39

Mode

Question 40

Easiest average to compute. [measure of central tendency]

Answer 40

Mode

Question 41

Statistical term that provides a good indication of volatility. [measures of dispersion]

Answer 41

Standard Deviation

Question 42

It measures how widely values are dispersed from the average. [measures of dispersion]

Answer 42

Standard Deviation

Question 43

It provides an average distance for each element from the mean. [measures of dispersion]

Answer 43

Standard Deviation

Question 44

Difference between the actual value and the average value. [measures of dispersion]

Answer 44

Dispersion

Question 45

Simplest and easiest way to determine measure of dispersion. [measures of dispersion]

Answer 45

Range

Question 46

The difference between the highest value and the lowest value in the data set. [measures of dispersion]

Answer 46

Range

Question 47

One of the most widely used measures of dispersion is the standard deviation.

Answer 47

Variance and Standard Deviation

Question 48

The more spread apart the data, the higher the deviation.

Answer 48

Variance and Standard Deviation

Question 49

Is calculated as the square root of variance. [variance and standard deviation]

Answer 49

Standard Deviation

Question 50

A mathematical expression of the average squared deviations from the mean. [variance and standard deviation]

Answer 50

Variance

Question 51

A measure of risk. [variance and standard deviation]

Answer 51

Volatility