Statistics Chapters 3 and 4 Test Review

the set of all possible outcomes of a probability experiment.

Standard Deviation means how much your data set differs from the mean.

average of the squares of the distance each value is from the mean

is used in computing other statistics, such as the variance.

the set of outcomes in the sample space that are not included in the outcomes of event E.

The ________ is affected by extremely high or low values in the data set.

since it consists of three outcomes or three simple events.

is an arrangement of n objects in a specific order.

68% of the data is within _ deviations of the mean in when the data is bell-shaped

What formula is this?

value is obtained by subtracting the mean from the value and dividing the result by the standard deviation.

When rounding a whole number on mean you should round to the tenths place.

if they cannot occur at the same time

The _______ standard deviation means the higher variability in a data set

Given a frequency distribution, the probability of an event being in a given class is

arithmetic average

The sum of the probabilities of all the outcomes in the sample space is 1.

Difference between the first and third quartiles

an extremely high or an extremely low data value when compared with the rest of the data values.

is the simplest of the three measures and is defined now.

The mean is found by using all the values of the data.

The mode is used to find when in is necessary to find out whether a data value falls into the upper and lower half

Quartiles divide the data in?

99.7% of the data is within _ deviations of the mean in when the data is bell-shaped

If A and B are not mutually exclusive, then

A data set that has only one value that occurs with the greatest frequency

Chebyshev’s Theorem how many deviations fall within 75% of the data

a probability value based on an educated guess or estimate, .

The sum of the lowest and highest values in the data set, divided by 2.

a chance process that leads to well-defined results called outcomes.

If Brand A has a standard Deviation of 5.4 and Brand B has a standard deviation of 6.7 Brand B is the least variable

The mean cannot be computed for the data in a frequency distribution that has an open ended class

the halfway point in a data set

I would use a combination for the order of Pizza toppings

Rounding rule for standard deviation

When two events are dependent, the probability of both occurring is

The value that occurs most often in a data set

the highest value minus the lowest value.

A selection of distinct objects without regard to order

In Chebyshev’s Theorem how many deviations fall within 88.89%

the result of a single trial of a probability experiment.

If a data set has more than two values that occur with the same greatest frequency

is easy to compute.

The higher Z score the _______ relative Position

When two events A and B are mutually exclusive, the probability that A or B will occur is

What is the estimated Standard Deviation? Paper Towel Brand C has a range of 104.

When two events are independent, the probability of both occurring is

are events that have the same probability of occurring.

The probability that the second event B occurs given that the first event A has occurred

divide the data set into 100 equal groups.

uses sample spaces to determine the numerical probability that an event will happen.

Rule we use when the data is bell-shaped.

Would I use a combination or a permutation? The Chess Club is electing a President, Vice President, and Secretary

What Formula is this?

If a data set has two values that occur with the same greatest frequency

95% of the data is within _ deviations of the mean in when the data is bell-shaped

The mode is the easiest average to compute

the standard deviation divided by the mean.

consists of a set of outcomes of a probability experiment.

the fact that A occurs does not affect the probability of B occurring.

When the outcome or occurrence of the first event affects the outcome or occurrence of the second event

The range can be used to approximate the standard deviation.

The median can be used when the data set is modal

The mean is found by using all the values of the data

An event with one outcome is called