#### Study sets matching "normal curve"

#### Study sets matching "normal curve"

What is characteristic of the normal c…

Inflection points

Empirical Rule

What information does the z score supp…

The mean, median, and mode are all in the same place

Where the graph appears to change directions

68% within one sd, 95% within two, 99.7% within three

How many standard deviations an x-value is from the mean

What is characteristic of the normal c…

The mean, median, and mode are all in the same place

Inflection points

Where the graph appears to change directions

Statistical inference

Normal distr.

Central limit theorem

Z-score

using descriptive summaries as basis for making estimates of…

(normal curve) good approximation of distribution of scores f…

regardless of original shape of distr., the sampling distr. o…

# of standard deviations from mean... (standardized score that a…

Statistical inference

using descriptive summaries as basis for making estimates of…

Normal distr.

(normal curve) good approximation of distribution of scores f…

Statistical inference

Normal distr.

Central limit theorem

Z-score

using descriptive summaries as basis for making estimates of…

(normal curve) good approximation of distribution of scores f…

regardless of original shape of distr., the sampling distr. o…

# of standard deviations from mean... (standardized score that a…

Statistical inference

using descriptive summaries as basis for making estimates of…

Normal distr.

(normal curve) good approximation of distribution of scores f…

distribution of many continuous variab…

the shape and position of the normal d…

spread of normal distribution is contr…

characteristics of normal distribution

normally distributed variables or bell curve or Gaussian dist…

1- mean ... 2- standard deviation

standard deviation

1- normal distribution curve is bell shape ... 2- mean , median…

distribution of many continuous variab…

normally distributed variables or bell curve or Gaussian dist…

the shape and position of the normal d…

1- mean ... 2- standard deviation

Statistical inference

Normal distr.

Central limit theorem

Z-score

using descriptive summaries as basis for making estimates of…

(normal curve) good approximation of distribution of scores f…

regardless of original shape of distr., the sampling distr. o…

# of standard deviations from mean... (standardized score that a…

Statistical inference

using descriptive summaries as basis for making estimates of…

Normal distr.

(normal curve) good approximation of distribution of scores f…

**area under**(a probability density cu…

1

normally distributed, normal distrubtion

one mode

The

**_ _**a PROBABILITY DENSITY CURVE between any two values…For any probability density curve, *the area under the entire…

A population that is represented by a normal curve is said to…

Normal distributions have

**_ _**.**area under**(a probability density cu…

The

**_ _**a PROBABILITY DENSITY CURVE between any two values…1

For any probability density curve, *the area under the entire…

Inflection Points

Discovery of the Normal Curve

68%

95%

Changes in curve direction 1 Standard Deviation above and 1 s…

By Friedrich Gauss, a German mathematician who was plotting t…

1 Standard Deviation away from the mean, 34 % left, 34% right

2 Standard Deviations away from the mean

Inflection Points

Changes in curve direction 1 Standard Deviation above and 1 s…

Discovery of the Normal Curve

By Friedrich Gauss, a German mathematician who was plotting t…

Relative standing

z-score

z-distribution

Standard normal curve

a systematic evaluation of a score by comparing it to the sam…

The statistic that indicates the distance a score is from its…

The distribution produced by transforming all raw scores in a…

A perfect normal curve that serves as a model of any approxim…

Relative standing

a systematic evaluation of a score by comparing it to the sam…

z-score

The statistic that indicates the distance a score is from its…

Normal Curve

Normal Distribution

Line of Symmetry

Line of Symmetry

Combines the mean and standard deviation with a graphical rep…

A set of numbers, that when plotted, makes a perfectly shaped…

Curve attribute line in the middle of values that touches at…

Where all three measures of central tendency (mean, mode, and…

Normal Curve

Combines the mean and standard deviation with a graphical rep…

Normal Distribution

A set of numbers, that when plotted, makes a perfectly shaped…

distribution of data

center

variability

shape

describing the data set by referring to the center, variabili…

the placement is found on the left, center, or right on the g…

the characteristics found in the data, which includes the: sp…

the patterns that describe the data; answering the questions…

distribution of data

describing the data set by referring to the center, variabili…

center

the placement is found on the left, center, or right on the g…

Normal Curve

Normal Curve Attributes

Normal Distribution

Abscissa

A graphical representation that combines the mean & standard…

Shaped like a bell, common name of "bell curve", each half of…

A set of numbers when plotted, make a perfectly shaped bell c…

This is the line below the curve on a normal curve

Normal Curve

A graphical representation that combines the mean & standard…

Normal Curve Attributes

Shaped like a bell, common name of "bell curve", each half of…

Central Tendency

Mode

Data can have more than one mode

Advantage: won't be skewed by outliers…

values that describe the middle or central characteristics of…

The score that occurs most frequently. No formula, inspection…

(i.e., bimodal, trimodal)

...

Central Tendency

values that describe the middle or central characteristics of…

Mode

The score that occurs most frequently. No formula, inspection…

bigger sample (n)

Normal curve

Normal distribution... - tails

probability

more clustered sd's will be around the mean

infinite number of normal curves

theoretically everything that occurs naturally is normally di…

is area under curve that represents probability that someone…

bigger sample (n)

more clustered sd's will be around the mean

Normal curve

infinite number of normal curves

0.1%

2.3%

15.9%

50%

what percentage is at or below -3 SD away from the mean?

what percentage is at or below -2 SD away from the mean?

what percentage is at or below -1 SD away from the mean?

what percentage is at the mean or below?

0.1%

what percentage is at or below -3 SD away from the mean?

2.3%

what percentage is at or below -2 SD away from the mean?

Normal Curve

Transformation

Z score

Roughly _____ of scores in a normal di…

defined by being unimodal, symmetrical, and bell-shaped, the…

changing the way a set of data looks without changing the bas…

the number of standard deviations that a score is away from t…

34%

Normal Curve

defined by being unimodal, symmetrical, and bell-shaped, the…

Transformation

changing the way a set of data looks without changing the bas…

Probability

Statistical significance

Thresholds

Calculating probability-the basics

the expected relative frequency of a given outcome... what you e…

- how do we know if our findings are meaningful?... Correlations…

results less likely than a predetermined level are statistica…

Determine the number of possible "successful" outcomes... Determ…

Probability

the expected relative frequency of a given outcome... what you e…

Statistical significance

- how do we know if our findings are meaningful?... Correlations…

Normal Curve

Transformation

Z score

Roughly _____ of scores in a normal di…

defined by being unimodal, symmetrical, and bell-shaped, the…

changing the way a set of data looks without changing the bas…

the number of standard deviations that a score is away from t…

34%

Normal Curve

defined by being unimodal, symmetrical, and bell-shaped, the…

Transformation

changing the way a set of data looks without changing the bas…

Normal curve

1-2-3 Rule

THE normal curve

Z-scores

Symmetrical distribution; mean and median are equal; bell-sha…

In a normal distribution, 68% of observations always fall bet…

Standardized normal distribution; theoretical, where the mean…

Used to standardize the distance from the mean; conversion of…

Normal curve

Symmetrical distribution; mean and median are equal; bell-sha…

1-2-3 Rule

In a normal distribution, 68% of observations always fall bet…

**Probability Density Curve**

**area under**(a probability density cu…

1

P(X = a) = 0

A

**_ _ _**is a curve used to describe the probability distrib…The

**_ _**a PROBABILITY DENSITY CURVE between any two values…For any probability density curve, *the area under the entire…

The region above a single point has zero width. Therefore, if…

**Probability Density Curve**

A

**_ _ _**is a curve used to describe the probability distrib…**area under**(a probability density cu…

The

**_ _**a PROBABILITY DENSITY CURVE between any two values…What does the n represent in the formu…

The upcoming presidential election inv…

Most depictions of a probability distr…

The normal curve never meets the x-axi…

D . Number of times the outcome or event can occur

C. Empirical probability

A. The population is infinite

B.The population is infinite

What does the n represent in the formu…

D . Number of times the outcome or event can occur

The upcoming presidential election inv…

C. Empirical probability

Normal Curve

Normal Curve

Normal Curve

Normal distribution

The ___ combines the mean and standard deviation with a graph…

is shaped like a bell; hence "bell curve"

each half of this curve is a mirror image/symmetrical

___ is defined as a set of numbers, that when plotted, makes…

Normal Curve

The ___ combines the mean and standard deviation with a graph…

Normal Curve

is shaped like a bell; hence "bell curve"

Normal Curve

Normal curve

Asymptotic

Mean, median, mode

Graphical representation of a normal distribution

Is symmetrical, with the highest point at the center

Normal curve is ____ at the base line

Coincide at one point at the center of the curve, they have e…

Normal Curve

Graphical representation of a normal distribution

Normal curve

Is symmetrical, with the highest point at the center

What is the normal curve?

The standard normal curve always has a…

7 properties of normal curve

What is the crucial point about the no…

a theoretical distribution of scores that is symmetrical, uni…

0,1

1)Theoretical... 2) bell-shaped... 3) unimodal... 4) symmetrical... 5) un…

The distances along the horizontal axis, when measured in sta…

What is the normal curve?

a theoretical distribution of scores that is symmetrical, uni…

The standard normal curve always has a…

0,1

Normal curve

Roughly 68% of the scores will be foun…

Roughly 95% of the scores will be foun…

Transformations

Defined by being unimodal, symmetrical, and bell-shaped; the…

The first property of the normal curve

The second property of the normal curve

Changing the way a set of data looks without changing the bas…

Normal curve

Defined by being unimodal, symmetrical, and bell-shaped; the…

Roughly 68% of the scores will be foun…

The first property of the normal curve

Describe the median and the mean of a…

Where is the mean located in symmetric…

Where is the median located in symmetr…

How are outliers represented in symmet…

Both median and mean are the same for symmetric density curves.

Mean lies at at the center of the curve.

Median lies at at the center of the curve.

Outliers are not described by the curve.

Describe the median and the mean of a…

Both median and mean are the same for symmetric density curves.

Where is the mean located in symmetric…

Mean lies at at the center of the curve.

Percentile

cumulative relative frequency graph

z-score

transforming data

the pth percentile of a distribution is the value with p perc…

"o-jive"; plot points that respond to its frequency

the standardize score; the observation minus the mean over th…

adding a constant to all values in a 5 number summary. Additi…

Percentile

the pth percentile of a distribution is the value with p perc…

cumulative relative frequency graph

"o-jive"; plot points that respond to its frequency

Standard Deviation

Homogenous data (standard deviation)

Heterogeneous data (standard deviation)

Normal curve

Most common measure of dispersion; the standardized distance…

s is small

s is large

can be described by using its mean and standard deviation; al…

Standard Deviation

Most common measure of dispersion; the standardized distance…

Homogenous data (standard deviation)

s is small

exhaling toward REL

exhaling below REL

inhaling above REL up to 55% VC

inhaling above 55% VC

no muscles; recoil of lungs active; restore of thorax present…

MOE active; recoil of lungs active; restore of thorax present…

restore of thorax active; recoil of lungs is present but bein…

MOI active; recoil of lungs and thorax present but being over…

exhaling toward REL

no muscles; recoil of lungs active; restore of thorax present…

exhaling below REL

MOE active; recoil of lungs active; restore of thorax present…

Probability

Theoretical mathematics/probabilities

Systematic observation/empirical proba…

Converse Rule

The relative frequency of occurrence of an event or outcome.…

Reflect the operation of chance or randomness.

Depend on observation to determine or estimate their values.

Probability of an event not occurring.

Probability

The relative frequency of occurrence of an event or outcome.…

Theoretical mathematics/probabilities

Reflect the operation of chance or randomness.

Normal Curve

Created Normal Curve

Development of a Normal Curve

Characteristics of a Normal Distribution

A specific, bell-shaped curve/distribution that is unimodal,…

Principles originally developed by Abraham DeMoivre in early…

When plotting data, a normal distribution may not emerge imme…

Normal distributions are symmetric around their mean. The mea…

Normal Curve

A specific, bell-shaped curve/distribution that is unimodal,…

Created Normal Curve

Principles originally developed by Abraham DeMoivre in early…

Standardization

Z-score

Z-distribution

Z-distribution always has a mean of

Converting raw scores to z-scores

Number of standard deviations a score is from the mean

Distribution composed only of z-scores

0

Standardization

Converting raw scores to z-scores

Z-score

Number of standard deviations a score is from the mean

Probability

Relative frequency

Egs

Probability formula

The expected 'frequency of occurance' of a particular event a…

Number of times something happens relative to the number of t…

Coin tosses... Simultaneous toss of two coins... Dice

Possible sucessful outcomes / all possible outcomes

Probability

The expected 'frequency of occurance' of a particular event a…

Relative frequency

Number of times something happens relative to the number of t…

Standard scores (or z-scores)

Standard normal curve

Skew

Kurtosis

Deviation scores expressed in standard deviation units; calcu…

A theoretical, symmetrical, bell-shaped distribution based on…

The degree to which a distribution is asymmetrical; defined m…

Refers to how tightly clustered values are around the mean of…

Standard scores (or z-scores)

Deviation scores expressed in standard deviation units; calcu…

Standard normal curve

A theoretical, symmetrical, bell-shaped distribution based on…

Standardization

z score

z score formula

Calculating raw score from z score

A way to convert individual scores from different normal dist…

The number of standard deviations a particular score is from…

X = z(SD) + (mean)

Standardization

A way to convert individual scores from different normal dist…

z score

The number of standard deviations a particular score is from…