what does standards deviation measures.

It measures how spread out data points are around the mean.

What is a population parameter

A numerical value that describes a characteristics of a population

If the range of a dataset is 25 and the smallest value is 5 what is the maximum value?

max = range + min = 25 + 5 = 30

Whats the difference between qualitative and quantitive data?

qualitative describes, quantitive measures numbers

whats the formula for midpoint?

Midpoint = (lowers class limit) + (underclass limit)/ 2

what is a probability distribution?

Functions showing likelihood of outcome

Define variance in statistics.

Variance is the average of the squared differences from the mean.

What is a discrete variable?

a variable with specific distinct values

What is a frequency distribution?

A table that shows the number of occurrences of each values in a dataset.

A graph that display the distribution of a dataset using quartiles.

a data point significantly different from other in the dataset

a numerical characteristics of a sample.

What is the difference between a population and a sample?

Population includes all while a sample is a sub set analyzed.

What is a continuous variable?

a variable that can take any value within a range.

Define a variable in statistics.

A variable is a measurable characteristic that can change in value.

what is a skewed distribution?

When one of the tails of the distribution is longer than the other

what is a percentile?

A value below which a given percentage of observation fail

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Answers

1
what does standards deviation measures.
It does NOT measure how spread out data points are around the mean.
its measure how far away the points are around the mean.
it measure how close up the data points are around the mean.
It measures how spread out data points are around the mean.
2
What is a population parameter
A lower value that describes a characteristics of a population
A higher value that describes a characteristics of a population
A numerical value that describes a characteristics of a population
A statistic value that describes a characteristics of a population
3
If the range of a dataset is 25 and the smallest value is 5 what is the maximum value?
max = range + min = 25 + 5 = 30
max = range + min = 25 x 5 = 125
max = range + min = 5 - 25 = -20
max = range + min = 25 - 5 = 20
4
Whats the difference between qualitative and quantitive data?
qualitative does describes, quantitive does not measures numbers
qualitative measure numbers quantitive describes
qualitative does not describes, quantitive does measures numbers
qualitative describes, quantitive measures numbers
5
whats the formula for midpoint?
Mindpoint= z= x-x/s.d
Midpoint = (underclass limit) + (lower class limit)/ 2
Midpoint = (lowers class limit) + (underclass limit)/ 2
Midpoint= Y+M=MX
6
what is a probability distribution?
Functions showing zero likelihood of outcome
equations showing likelihood of outcome
Functions showing likelihood of outcome
Functions that aren't showing likelihood of outcome
7
Define variance in statistics.
Variance is not the average of the squared differences from the mean.
Variance is the medium of the squared differences from the mean.
Variance is the average of the squared differences from the mean.
Variance is the average of the equations differences from the mean.
8
What is a discrete variable?
a variable with specific distinct values
a variable with one distinct values
a variable with two distinct values
a variable with several distinct values
9
What is a frequency distribution?
A table that shows the number of occurrences of each values in a dataset.
A table that shows a equations of each value dataset.
A graph that shows a different dataset.
a graph that shows the numbers of equations in a dataset.
10
what is a box plot
A graph that display the distribution of a dataset using quartiles.
A variable that display the distribution of a dataset using quartiles.
A equation that display the distribution of a dataset using quartiles.
the area of the box represents the frequency or proportion of observations.
11
whats the median of 2,5,8,12,15
4
23
10
8
12
what is an outlier
a data point significantly different from other in the dataset
a data point far away from other in the dataset
a data point significantly the same from other in the dataset
a data point close from other in the dataset
13
Given the dataset 3,3,4,6,6,7 whats the mode?
6
3
7
4
14
What is statistic?
a multiple characteristics of a sample.
a numerical equations of a sample.
a numerical characteristics of a sample.
a division characteristics of a sample.
15
What is the difference between a population and a sample?
Population means amount of people while sample means a taste of something.
A population is a sub set analyzed while a sample includes all.
Population includes all while a sample is a sub set analyzed.
Population doesn't include all while a sample includes all.
16
What is a continuous variable?
a variable that can take 1 value within a range.
a variable that can take no value within a range.
a variable that can take any value within a range.
a variable that cant take any value within a range.
17
Calculate the range if the dataset 10,22,30,45,50
Range= 50-10=40
Range= 50-10=-40
Range= 50-18=40
Range= 50-10=30
18
Define a variable in statistics.
A variable is a fraction.
A variable is a number in an equation.
A variable is a number in a question.
A variable is a measurable characteristic that can change in value.
19
what is a skewed distribution?
When one of the tails of the distribution is longer than the other
When one of the tails of the distribution, is shorter than the other
When one of the points of the distribution, is longer than the other
When two of the tails of the distribution is longer than the other
20
what is a percentile?
A value above which a given percentage of observation fail
they indicate a percentage of correctness or a score achieved
A value below which a given percentage of observation fail
they indicate a percentage of incorrectness or a score achieved

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