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Discussion forum for Statistics for Data Science I

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Dear Candidates

Welcome to the course!!

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Thank you!!

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Arka Das, Statistics 1 Support 13

11/21/20

Doubt mock qualifier quetion 13

Hello, 45n1+ 50n2= 48n1+48n2 since the mean of sections A and B is 48. So, both are correct. Thanks

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Doubt mock qualifier quetion 13

Hello, 45n1+ 50n2= 48n1+48n2 since the mean of sections A and B is 48. So, both are correct. Thanks

11/21/20

I Shot, Statistics 1 Support 12

11/21/20

Classmark is an average of minimum and maximum values which are 55 and 60. So the class mark would be

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Classmark is an average of minimum and maximum values which are 55 and 60. So the class mark would be

11/21/20

AMRUTA SAJI, Statistics 1 Support 13

11/21/20

pls help in making the table for this 1st question.

Thank you. On Sat, 21 Nov, 2020, 10:06 PM Statistics 1 Support 1, <stats1-support1@onlinedegree.

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pls help in making the table for this 1st question.

Thank you. On Sat, 21 Nov, 2020, 10:06 PM Statistics 1 Support 1, <stats1-support1@onlinedegree.

11/21/20

K Venkat Krishna Rao, … Statistics 1 Support 111

11/21/20

When to use Correlation coefficient and when to use Point Biserial correlation coeffecient

If one variable is categorical and other is numerical then it would be point bi-serial correlation.

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When to use Correlation coefficient and when to use Point Biserial correlation coeffecient

If one variable is categorical and other is numerical then it would be point bi-serial correlation.

11/21/20

Aditi Prasad, … Statistics 1 Support 14

11/21/20

At this particular time, if you collect temperatures across all major cities in India, it is cross-

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At this particular time, if you collect temperatures across all major cities in India, it is cross-

11/21/20

Hirak Talukdar, Statistics 1 Support 12

11/21/20

Doubt regarding Week 1 activity question 2

Case is point/object/person from which you collect data. Cases are 9 AM, 9:30 AM, 10 AM, ..... 4 PM.

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Doubt regarding Week 1 activity question 2

Case is point/object/person from which you collect data. Cases are 9 AM, 9:30 AM, 10 AM, ..... 4 PM.

11/21/20

Arka Das, Anand Iyer2

11/20/20

data need not in order for calculating correlation. it's important only for median and in general

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Answeredbystudents

data need not in order for calculating correlation. it's important only for median and in general

11/20/20

Shreya Verma, Statistics 1 Support 12

11/20/20

Dount in practice assigment

Hi, In this question, we are to find the range of the mean, what values mean can take. Try to find

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Dount in practice assigment

Hi, In this question, we are to find the range of the mean, what values mean can take. Try to find

11/20/20

imran immu, … Anand Iyer5

11/20/20

ratio or ordinal

If we're going by the picture in the original post, yes, both are ordinal. Both have order and

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ratio or ordinal

If we're going by the picture in the original post, yes, both are ordinal. Both have order and

11/20/20

Lakshman K R, Statistics 1 Support 12

11/20/20

Hi, No, the mock test was not compulsory to attend. It was not for grading, It was for practice.

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Hi, No, the mock test was not compulsory to attend. It was not for grading, It was for practice.

11/20/20

nikhil kambli, Statistics 1 Support 12

11/20/20

week 3 practice exam

Hi, Try to find out the minimum and maximum values for mean by putting possible minimum and maximum

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week 3 practice exam

Hi, Try to find out the minimum and maximum values for mean by putting possible minimum and maximum

11/20/20

Ruchi Sinha, Statistics 1 Support 12

11/20/20

Practice Assignment 3

Hi, Count the number of observations you are adding. observations are x(n+1), x(n+2), .. up to x(3n).

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Practice Assignment 3

Hi, Count the number of observations you are adding. observations are x(n+1), x(n+2), .. up to x(3n).

11/20/20

John Cherian, Statistics 1 Support 13

11/20/20

Week 4 Activity Question 8

Thank You sir. On Friday, November 20, 2020 at 1:14:51 PM UTC+5:30 stats1-...@onlinedegree.iitm.ac.in

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ActivityQuestion

Week 4 Activity Question 8

Thank You sir. On Friday, November 20, 2020 at 1:14:51 PM UTC+5:30 stats1-...@onlinedegree.iitm.ac.in

11/20/20

Sofia Sagar, … rakesh ky3

11/20/20

request regarding qualifiers

sir, should the hall ticket be printed in color or black and white print? On Friday, November 20,

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request regarding qualifiers

sir, should the hall ticket be printed in color or black and white print? On Friday, November 20,

11/20/20

Sofia Sagar, Statistics 1 Support 13

11/20/20

regarding qualifiers

Thank you for the information. On Fri, 20 Nov 2020 at 13:04, Statistics 1 Support 1 <stats1-

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regarding qualifiers

Thank you for the information. On Fri, 20 Nov 2020 at 13:04, Statistics 1 Support 1 <stats1-

11/20/20

Rachit soni, … Statistics 1 Support 14

11/20/20

Doubt related Bi serial correlation

Thank you for the clarification. On Fri, 20 Nov 2020, 13:08 Statistics 1 Support 1, <stats1-

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Doubt related Bi serial correlation

Thank you for the clarification. On Fri, 20 Nov 2020, 13:08 Statistics 1 Support 1, <stats1-

11/20/20

Anita Bajaj, Statistics 1 Support 12

11/20/20

DOUBT in Practise assignment 1

Hi, here, the variable is year not age in years. year does not have absolute zero that's why it

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DOUBT in Practise assignment 1

Hi, here, the variable is year not age in years. year does not have absolute zero that's why it

11/20/20

Yash Verma, Statistics 1 Support 12

11/20/20

Question about using calculators

Hi, Yash You need not bring your own calculator. A virtual calculator will be provided to you. Thanks

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Question about using calculators

Hi, Yash You need not bring your own calculator. A virtual calculator will be provided to you. Thanks

11/20/20

Arush Garg, Statistics 1 Support 12

11/20/20

Hi, Check the row relative frequencies, you will come to know that customers who visit Flipkart are

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ActivityQuestion

Hi, Check the row relative frequencies, you will come to know that customers who visit Flipkart are

11/20/20

Prateek Thakur, Statistics 1 Support 12

11/20/20

Hi, Frequency and relative frequency for 1st observation is given. From here, you can calculate the

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ActivityQuestion

Hi, Frequency and relative frequency for 1st observation is given. From here, you can calculate the

11/20/20

Priyanshu Singh, … Parashmani Datta4

11/20/20

activity imp question qualifer

Sir, It is necessary to be in interval scale the difference or interval need to be same between the

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ActivityQuestion

activity imp question qualifer

Sir, It is necessary to be in interval scale the difference or interval need to be same between the

11/20/20

Pragati Mungekar, … Statistics 1 Support 14

11/20/20

Final Call - Date & Day of Week( Numeric /or Categorical) ?

Hi, The date can be considered both categorical or numerical variables depending on the context of

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Final Call - Date & Day of Week( Numeric /or Categorical) ?

Hi, The date can be considered both categorical or numerical variables depending on the context of

11/20/20

Niraj kumar, … Koyal Patra8

11/20/20

Thank you for the clarification. On Fri, 20 Nov 2020, 13:11 Statistics 1 Support 1, <stats1-

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Thank you for the clarification. On Fri, 20 Nov 2020, 13:11 Statistics 1 Support 1, <stats1-

11/20/20

Muhammed Aslam A, Statistics 1 Support 12

11/19/20

wk 4 qstn2 practice assignment doubt

Hello Aslam, In this question, we have to calculate the correlation coefficient. For that, we need to

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wk 4 qstn2 practice assignment doubt

Hello Aslam, In this question, we have to calculate the correlation coefficient. For that, we need to

11/19/20

Nandni Gupta, Statistics 1 Support 12

11/18/20

Hello, As you can always count the number of coupons, it will come under the discrete variable.

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Hello, As you can always count the number of coupons, it will come under the discrete variable.

11/18/20

Priyanshu Singh, Statistics 1 Support 12

11/18/20

q2 mock test very imp

Hello Priyanshu, No, we will not use (n-1) in the denominator while calculating the sample mean.

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q2 mock test very imp

Hello Priyanshu, No, we will not use (n-1) in the denominator while calculating the sample mean.

11/18/20

Saghana Shree, … Nandni Gupta4

11/18/20

DOUBT : Q NO. 17 MOCK TEST

yeah thanks :) On Wednesday, November 18, 2020 at 4:53:11 PM UTC+5:30 Nandni Gupta wrote: their they

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DOUBT : Q NO. 17 MOCK TEST

yeah thanks :) On Wednesday, November 18, 2020 at 4:53:11 PM UTC+5:30 Nandni Gupta wrote: their they

11/18/20

Tejasvi Hegde, … CG6

11/18/20

Mock Test Q5, why the difference has to be 40-55 ? why cant it be any other value ?

relative frequency of x - relative frequency of z = 0.06 [This is what the question says ] In the

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Mock Test Q5, why the difference has to be 40-55 ? why cant it be any other value ?

relative frequency of x - relative frequency of z = 0.06 [This is what the question says ] In the

11/18/20

Tejasvi Hegde, … Pragati Mungekar4

11/18/20

Mock Test Q4 Bi-Serial why is Population SD used ?

Dear Support Team, This is too early to make an announcement for the next 2021 Qualifier Exam to be

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Mock Test Q4 Bi-Serial why is Population SD used ?

Dear Support Team, This is too early to make an announcement for the next 2021 Qualifier Exam to be

11/18/20

ar Memon, Statistics 1 Support 14

11/18/20

you can see my ans. of que 3 (sample variance) is right and I taken square root of it to get standard

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you can see my ans. of que 3 (sample variance) is right and I taken square root of it to get standard

11/18/20

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