




Card 6 / 20:
Car manufacturers are interested in whether there is a relationship between the size of car an individual drives and the number of people in the driver’s family (that is, whether car size and family size are independent). To test this, suppose that 800 car owners were randomly surveyed with the results in . Conduct a test of independence.
The course author didn't provide an answer for this question

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Questions & Answers
how to construct a histogram
I want to test linear regression data such as maintenance fees vs house size. Can I use R square, F test to test the relationship?
Is the good condition of R square greater than 0.5
yes of course must have use f test and also use t test individually multple coefficients
rishi
hi frnd I'm akeem by name, I wanna study economics and statistics wat ar d thing I must do to b a great economist
akeem
Is R square cannot analysis linear regression of X vs Y relationship?
Mok
To be an economist you have to be professional in maths
umar
what is random sampling
what is sample error
@Nistha Kashyap Random sampling is the selection of random items (or random numbers) from the group.
A sample error occurs when the selected samples do not truely represent the whole group. The can happen when most or all of the selected samples are taken from only one section of the group;
Ron
Thus the sample is not truely random.
Ron
A game in which there is no profit & no loss to any of the both player.
Milan
Differences between sample mean & population mean
***keydifferences.com/differencebetweensamplemeanandpopulationmean.html
Lucien
Not difference in the formula except the notation, sample mean is denoted by x bar and population mean is denoted by mu symbol.
There is formula as well as notation between difference variance and standard deviations
Akash
Likely the difference would be in the result, unless the sample is an exact representation of the population (which is unlikely.)
Ron
Nii Avin  Data is just a simple way to refer to the numbers in the population, or in the sample used in your calculations.
Ron
what are the types of data
Nii
Data is the very pale android from the Star Trek Enterprise
Andrew
Am Emmanuel from Nigeria
Emmanuel
Am Qudus from Nigeria
Rasak
am Handson from Cameroon
Handson
Nii  data is whatever you are sampling. Such as the number of students in each classroom.
Ron
Handson Ndintek  the mode is the number appearing most frequently. Example: 7 9 11 7 4 6 3 7 2. 7 is the mode. In a group such as 7 9 1 4 6 3, there is no mode because no number appears more often than any other.
Ron
hi I want to know how to find class boundary
Baalisi
give me the two types of data
qualitative and quantitative
phoenix
primary and secondary data
Peace
qualitative and quantitative
Prince
Using Cauchy Schwartz inequality,or prove that
b2b11=0
what is the ongoing probability that President Trump will remain in the position he has chosen as his viability of his cabinet as he runs for reelection in the primaries of 2020 election year
Terry
it's a science of collection, organization, analysis and summarizing data to get useful information to make several types of conclusions.which can be used in real life.
anshika
what is the statistical probability that president Trump will remain in the white house after the election of 2020?
Terry
i agree with anshika is right but let me add that such decisions are made in face of uncertainty
Maureen
classification of statistic
statistic can classified into many types
eassy to understand
future values effect
Narendra
İ want to understand what is t test or neyma. Pearson test ans difference
Yasin
to test the hypotesis ho follws h1
l1/lo
Narendra
Hope this helps.
There are three main types of averages.
*mean > average >
(X1+X2+X3+...+Xn) / n
*mode > the element within a set which occurs most.
{3,4,5,8,12,3,4,3,3,56}
mode = 3
*median 
{3,3,4,5,8,12,56}
median = 5
OR
{3,4,5,8,12,56}
median = 6.5
Jack
conceptual approach to limits
how are limits derived?
lameck
an entire section of calculus is devoted to that explanation.
Pitior
statistics : can be defined as the branches of mathematics that deals with the summarizing, analysing,organization and interpretation of data.
Usman
can we find Z value on calculator with out using Z table
can another way is possible ?
Maham
Well you could make a table. And as the function you use the one used at the z table
Luca
The normal function is only one way, so you can only try using different numbers until you get the probability that you have. So that is easier if you have a table
Luca
me don't know nothing about z table and don't know how to see the z value on table can you tell me please how see the value on table
Maham
The z table is the table of the standard normal distribution
Luca
You can look it up on internet, its easier than writing down the normal distribution function (with an integral) and doing a table in the calculator
Luca
yes use pnorm in r
Venkat
pnorm(2.3,mean=0,sd=1)
Venkat
do u have r software
Venkat
its with tht u will get
Venkat
z mathportal calculator
Venkat
have calculator but don't know how find z value
Maham
hey guys I'm from computer background so what are the concepts I supposed to prepare for interview in statistics
Alwin
assumption of linear regression
Venkat
logistic regression
Venkat
k means clustering
Venkat
type. analytics vidya interview questions statistics
Venkat
My question is "is it only stats?"
Jameel
wer is the problem
Venkat
how find straight line equation in regression
u can find using excel
Venkat
by giving a value to x,y
Ibrokhim
first provide data
Venkat
ill solve and guve
Venkat
maham you posted data
Venkat
x:1,2,3,4,5
y:2,5,6,8,9
Maham
regredsion equation is
Venkat
reg eq is y=0.9+1.7x
Venkat
thanx venkat naveen😊
Maham
the tenth percentile for land selling at jabi is 35,000 and the nineteenth percentile for the land price in the same area is 225,what is the 10_90 percentile range
Source:
OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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