# distributive tendency Flashcards

Browse 148 sets of distributive tendency flashcards

Central Tendency

Mode

Bimodal

Multimodal

The tendency for the values of a random variable to cluster ro…

The number which occurs the most in a data set

Two modes

More than two modes

Central Tendency

The tendency for the values of a random variable to cluster ro…

Mode

The number which occurs the most in a data set

Frequency Histogram

frequency distribution

unimodal distribution

bimodal distribution

1- Sort data from smallest to largest... 2- Define size of x... 3- C…

the relationship between a particular value of a variable and…

only one most common score

two equally common scores

Frequency Histogram

1- Sort data from smallest to largest... 2- Define size of x... 3- C…

frequency distribution

the relationship between a particular value of a variable and…

Idiographic

Nomothetic

Normal Dist

Z Scores

the study of the individual. Properties setting apart from oth…

the study of a cohort of individuals. ... What we share, generali…

-Looks like the cross section of a bell... -The distribution of a…

-Convert a score into the number of standard deviations above…

Idiographic

the study of the individual. Properties setting apart from oth…

Nomothetic

the study of a cohort of individuals. ... What we share, generali…

Mean

Median

Mode

Range

average: ... add everything & divide by how many

middle value (medium): ... write data in order, find the middle v…

most frequent value: ... find the number you see the most number…

spread (or span) of the data: ... max - min... subtract the maximum…

Mean

average: ... add everything & divide by how many

Median

middle value (medium): ... write data in order, find the middle v…

What are the measures of central tenden…

What is standard deviation?

What is variance?

What are the measures of spread?

Mean - Average (add all up, divide by how many) ... Median - Midd…

A computed measure of how much scores vary around the mean sco…

Standard deviation squared, measure of variability based on ho…

range, variance, standard deviation

What are the measures of central tenden…

Mean - Average (add all up, divide by how many) ... Median - Midd…

What is standard deviation?

A computed measure of how much scores vary around the mean sco…

Variability

Range

Limitation

Deviation

the degree to which scores are spread out or clustered togethe…

the distance between the smallest and largest scores in a dist…

range is completely determined by the smallest and largest sco…

the difference or distance between a score and the mean

Variability

the degree to which scores are spread out or clustered togethe…

Range

the distance between the smallest and largest scores in a dist…

simple frequency distribution

measures of central tendency

mode

median

an ordered arrangement that shows the frequency of a set of sc…

descriptive statistics that indicate a typical or representati…

the most common score in the distribution

the score that falls in the middle of the distribution

simple frequency distribution

an ordered arrangement that shows the frequency of a set of sc…

measures of central tendency

descriptive statistics that indicate a typical or representati…

What is another name for a frequency di…

what isa frequency distribution?

What are the characteristics of a norma…

What is a skew?

a histogram

A graph plotting values of observations on the horizontal axis…

Bell Shaped... Symmetrical around the center.

the symmetry of the distribution

What is another name for a frequency di…

a histogram

what isa frequency distribution?

A graph plotting values of observations on the horizontal axis…

discontinuous variable

continuous variable

discrete variable

real limits

...

scale for which there are infinite number of possible values

scale consisting of separate, indivisible categories

boundaries of intervals for score that are represented on a co…

discontinuous variable

...

continuous variable

scale for which there are infinite number of possible values

Frequency distributions (Histograms)

skew

Positive skew

Negative skew

A graph plotting values of observations on the horizontal axis…

symmetry of the distribution

scores bunched at low values with the tail pointing to high va…

scores bunched at high values with the tail pointing to low va…

Frequency distributions (Histograms)

A graph plotting values of observations on the horizontal axis…

skew

symmetry of the distribution

What is an idiographic approach?

What is a nomothetic approach?

What are the properties of a normal dis…

What are the measures of central tenden…

- describes the study of the individual... - focuses more on the…

- attempts to study behaviour through the use of universal/gen…

- Bell shaped... - symmetric around its mean... - the mean,median a…

arithmetic mean, median, mode

What is an idiographic approach?

- describes the study of the individual... - focuses more on the…

What is a nomothetic approach?

- attempts to study behaviour through the use of universal/gen…

Central Tendency:

Mean:

Median:

Mode:

Tells us where the center of distribution is, the average

-Can be used with continuous variables, not discrete variables…

-Can be used with continuous variables, not discrete variables…

-The most common form of CT ... -Appropriate measure for nominal…

Central Tendency:

Tells us where the center of distribution is, the average

Mean:

-Can be used with continuous variables, not discrete variables…

What is an idiographic approach?

What is a nomothetic approach?

What are the properties of a normal dis…

What are the measures of central tenden…

- describes the study of the individual... - focuses more on the…

- attempts to study behaviour through the use of universal/gen…

- Bell shaped... - symmetric around its mean... - the mean,median a…

arithmetic mean, median, mode

What is an idiographic approach?

- describes the study of the individual... - focuses more on the…

What is a nomothetic approach?

- attempts to study behaviour through the use of universal/gen…

describing a distribution

Describing the shape of a distribution

central tendency

Variation

shape, central tendency and variation

is the distribution rectangular, positive skew, negative skew,…

a number that describes something about the "average" score of…

indicators of the spread of scores

describing a distribution

shape, central tendency and variation

Describing the shape of a distribution

is the distribution rectangular, positive skew, negative skew,…

Central tendency

Mean

Population Mean

Sample mean

A single score that summarize the center of a distribution

Average; the sum of a set of data divided by the total number…

A mean of a set of scores in an entire population

Subset scored from a population

Central tendency

A single score that summarize the center of a distribution

Mean

Average; the sum of a set of data divided by the total number…

What is the mean for the following scor…

After 5 points are subtracted from ever…

After each score in a sample is multipl…

In a sample of n=6 scores, the smallest…

8

29

7

the mean is M=8

What is the mean for the following scor…

8

After 5 points are subtracted from ever…

29

central tendency

mode

median

mean

-3 ways to describe what is happening in the center of a distr…

-most common score... -best when data are nominal... -in a frequency…

-middle score... -best for a skewed distribution or one with one…

-average of group of scores... -most commonly used and best for s…

central tendency

-3 ways to describe what is happening in the center of a distr…

mode

-most common score... -best when data are nominal... -in a frequency…

Mean

Standard deviation

frequency distributions/direction of sk…

What are Percentile Ranks

add/total the scores then divide by number of scores... Average…

The standard deviation is an approximation of the average devi…

- displays scores on a variable or a measure to reflect how fr…

Percentile rank show "what percent of scores fall below a part…

Mean

add/total the scores then divide by number of scores... Average…

Standard deviation

The standard deviation is an approximation of the average devi…

what is a frequency distribution?

how are frequency distributions present…

what are two things a frequency distrib…

how do you find the proportion of a par…

an organized tabulation of the number of individuals located i…

in matrices and/or graphs

1) what proportion of the sample each category covers and 2) w…

divide the frequency of the category by the total number of in…

what is a frequency distribution?

an organized tabulation of the number of individuals located i…

how are frequency distributions present…

in matrices and/or graphs

In a histogram each interval must have…

Central Tendency ... (the "middle-ness" of…

MODE:

Mu (µ)

True

The idea of selecting the 1 average or representative (most ty…

the most frequently occurring score in the distribution.

Mean or average of population

In a histogram each interval must have…

True

Central Tendency ... (the "middle-ness" of…

The idea of selecting the 1 average or representative (most ty…

Ways to describe scores

Frequency distribution

Class interval size =

graphic presentations of frequency dist…

frequency distributions... measure of central tendency... measure of…

places scores on order on a table or graph... see scores "at a gl…

highest score - lowest score (over)... Desired # of class interva…

frequency polygon (p. 54)... smoothed frequency polygon (p. 55)

Ways to describe scores

frequency distributions... measure of central tendency... measure of…

Frequency distribution

places scores on order on a table or graph... see scores "at a gl…

Sigma (summation notation)

f1

f2

Ratio

n = where the sum of terms end ... l = where the sum of terms beg…

number of observations in first category

number of observations in second category

Count of observations in one category per number of observatio…

Sigma (summation notation)

n = where the sum of terms end ... l = where the sum of terms beg…

f1

number of observations in first category

Frequency Distribution: Name four diffe…

Frequency Distribution: What is the dif…

Frequency Distribution: What is a histo…

Frequency Distribution: What is a frequ…

Histograms, frequency polygon, frequency table

group frequencies have intervals to consaladate frequencies. T…

This is a graph that looks like a bar graph, but depicts only…

A frequency polygon is a line graph with the x axis representi…

Frequency Distribution: Name four diffe…

Histograms, frequency polygon, frequency table

Frequency Distribution: What is the dif…

group frequencies have intervals to consaladate frequencies. T…

Mean

Outlier

Median

Mode

average... -calculated by adding up all the values in a data set…

an extreme deviation from the mean in a data set

the middle score in a distribution; half the scores are above…

the most frequently occurring score(s) in a distribution

Mean

average... -calculated by adding up all the values in a data set…

Outlier

an extreme deviation from the mean in a data set