From 585325be8ed36c686805463f7265eb75055e5f11 Mon Sep 17 00:00:00 2001
From: sunilhariharan <sunilhariharan@gmail.com>
Date: Thu, 11 Oct 2018 06:45:15 +0000
Subject: [PATCH 1/4] Done

---
 __pycache__/__init__.cpython-36.pyc           | Bin 163 -> 156 bytes
 .../__pycache__/__init__.cpython-36.pyc       | Bin 177 -> 170 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 560 -> 630 bytes
 q01_cond_prob/build.py                        |   9 ++++++++-
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 183 -> 176 bytes
 .../test_q01_cond_prob.cpython-36.pyc         | Bin 1691 -> 1684 bytes
 6 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/__pycache__/__init__.cpython-36.pyc b/__pycache__/__init__.cpython-36.pyc
index 2ba0c8128ed226d8795f0b8b0cc1481272d86b4c..d282c2f3fae6cf3b3d0600e868e5c7b31b73920b 100644
GIT binary patch
delta 56
zcmZ3?IERtLn3tDJ=;OZVi5%uCp86U2xvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%Mt(x-V?R}

delta 63
zcmbQkxR{Z{n3tF9(7ooUi5%wI0s0yFxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@TlPv+KBo><h

diff --git a/q01_cond_prob/__pycache__/__init__.cpython-36.pyc b/q01_cond_prob/__pycache__/__init__.cpython-36.pyc
index a5c1ab27a925d7c6ab904d43c42e33fb15ea64d6..98932b4bf139b12a3f4248bd6b59d61e17c7758a 100644
GIT binary patch
delta 56
zcmdnUxQda(n3tDJ=;OZVi5%uC;rbc*xvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%N+m_5)<wK

delta 63
zcmZ3*xRH^=n3tF9(7ooUi5%wIarzngxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@TlidNZeiqXJ

diff --git a/q01_cond_prob/__pycache__/build.cpython-36.pyc b/q01_cond_prob/__pycache__/build.cpython-36.pyc
index 4654504299c0bacbf40adc47f518204d14780447..bdd785c6d708e97b508f49e25cca0230b16dcad5 100644
GIT binary patch
literal 630
zcmYjOO>fgc5ZzsW#0?252%%Q}1-aCGTv1htdpHmY$sk!9&!$;p@4EXD)G9fJD?fxk
z!4KIh2b3dMPK;fsy3#z)Jng)BJAOT#j=SGKKK`PF{3H(!!~7D%zCr*3v>`1mDD89B
zup%11agm6qP9fUUVgxZHUrCVxdrxNR0sF{|h79CJTB+6i_Bn9J^R@O?l%0{4R9EMf
z-BdVxI0<5m@fO3@2#(Zri?dHj&45AljeTM}x??VK@s@7cp6%%_+C~tc5|?02&&XW`
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rx803Ndp<LQLy14mOt2i<2kQ^u$#CyYtHC$oBEo7IIbj*i=s5lhbk(O5

literal 560
zcmYjN%}(4f5VoCcHbje5B!pP)p*?ncAg#C}REZwZ_5deyu)G=X#@i$gc0vUTC;A#Z
z0FS~e<jQGZp(n;Es<1Sl=g;5F=i}YoM1Fka&y<iC^6oJ7zoWS?2ta@qq@<iu@3VsO
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zi0JJM&7C83WP=l@<eqlu1Dg^Eej&bPS;sm$BOQbAkaX1JjO_b(G{lHLz7M*<Z?v#}
z5T7iRUgt|=b7O#ye-?0Qepg#x+j_OQ^T_40R`alDu;Pg<3NbA0_};%;=t{i3;~z3p
zfo@QsEKrqMJ`p=cn!i`5v{b2F<~sdhvbI!J<I=TNx3V#1imacoeWNnW>T0Dd)-`gt
zMmEkf`BHlQ^_%b$2I_R#>H?1H+kWSNZi2I1j6i5Y59nuVchH}Y`$ULU+q6~*VZE+C
rs$~Vz^{j?Iwn~D)&$khlh9|?;@4$2R@kwc*E!3%JaK3lKVwOa&zY2~g

diff --git a/q01_cond_prob/build.py b/q01_cond_prob/build.py
index 46a16ee..11f9e2e 100644
--- a/q01_cond_prob/build.py
+++ b/q01_cond_prob/build.py
@@ -1,12 +1,19 @@
+# %load q01_cond_prob/build.py
 # So that float division is by default in python 2.7
 from __future__ import division
 
 import pandas as pd
-
+import numpy as np
 df = pd.read_csv('data/house_pricing.csv')
 
 
 # Enter Code Here
+def cond_prob(df):
+    u,counts=np.unique(df['Neighborhood'].values,return_counts=True)
+    d=dict(zip(u,counts))
+    conditional_prob=(d['OldTown']/sum(counts))*((d['OldTown']-1)/(sum(counts)-1))*((d['OldTown']-2)/(sum(counts)-2))
+    
+    return conditional_prob
 
 
 
diff --git a/q01_cond_prob/tests/__pycache__/__init__.cpython-36.pyc b/q01_cond_prob/tests/__pycache__/__init__.cpython-36.pyc
index 9e8f52b9670fef7c8ebeab5aaf783861596b3735..e58c3d208aa7159fa39c3d050b8df4fb1883b74f 100644
GIT binary patch
delta 56
zcmdnaxPg(wn3tEU@Z-Mdi5%uCvHBVLxvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%NGD92NY!h

delta 63
zcmdnMxSf&1n3tF9Mq+E!L=JQ96#b0++*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWiv$-V%es}_a;

diff --git a/q01_cond_prob/tests/__pycache__/test_q01_cond_prob.cpython-36.pyc b/q01_cond_prob/tests/__pycache__/test_q01_cond_prob.cpython-36.pyc
index e8852e97b2c7d11e7e2c94ad7d3101fc05eb2f6d..6266f5f23304c3ff3a293a825843df6c0070230a 100644
GIT binary patch
delta 59
zcmbQuJB63Sn3tEU@Z-MdjU0O!Rnqk{@^e%5i%at|b21W(GJ!ZTPd_}rD7&~IF*#K~
NIX@+J^9RP&EC6m&76AYN

delta 66
zcmbQjJDZoon3tF9Mq+E!MvlFV+IjjJ`MIh3iAfom`Y!p&rManjCB^#bMX8mECHcAf
Wi8(n61x5K;smUe9n_n`nW&r^2%orj7


From ce177dd43b6e93ae3c1e67377f187b347c83696e Mon Sep 17 00:00:00 2001
From: sunilhariharan <sunilhariharan@gmail.com>
Date: Thu, 11 Oct 2018 06:56:15 +0000
Subject: [PATCH 2/4] Done

---
 .../__pycache__/__init__.cpython-36.pyc       | Bin 187 -> 180 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 718 -> 674 bytes
 q02_confidence_interval/build.py              |  10 ++++++++++
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 193 -> 186 bytes
 ...est_q02_confidence_interval.cpython-36.pyc | Bin 2316 -> 2309 bytes
 5 files changed, 10 insertions(+)

diff --git a/q02_confidence_interval/__pycache__/__init__.cpython-36.pyc b/q02_confidence_interval/__pycache__/__init__.cpython-36.pyc
index 741ad2df56ebd795144517f30579112c8725c917..9d9a172906b54bfaa86098e5f75af07094dee86d 100644
GIT binary patch
delta 56
zcmdnZxP_6!n3tDJ=;OZVi5%uCiTWA&xvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;D-Zw{?i3aP

delta 63
zcmdnOxSNr~n3tF9(7ooUi5%wI8TuLdxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@TlLG;_EEf9!

diff --git a/q02_confidence_interval/__pycache__/build.cpython-36.pyc b/q02_confidence_interval/__pycache__/build.cpython-36.pyc
index b478df2185179a11ca8a5a753fb3aedba6bb2ba4..c28276b1ba562f764aeb77ba37b62b421e5e1221 100644
GIT binary patch
delta 486
zcmZ8cy-EW?5Z=ArJ&%hCf)NEvt0Q2F6cz>}q!PqNL^(lOZa2xr`}6h^Fx(MATMNkp
z2zI`NkKhAbC0N*5Sy?%ENg>WKGdnZi%s2bSp4nEbS~cnS>v=;%=mY%`$k9HS+JD^I
zsR=6BJ+e)KkCCN6-da-!FThI>8CbUfpMguz5Dzthh4z3moT4GQLzxDVLL>=;mwtyc
znrbOdNlFD-MVqLOHc-a?*Va*{r!3Wb8t~Giey^0Tjy1(OzU~7X$a}|H%9%=dqH-F9
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Tp%{5`k3go1UB%-0dV~D}r-5~O

literal 718
zcmZuvyN(kv6tz8`$t2mVkXXSY3TUUvAZS-S#7amAZ9{|HjJ&od@n~MLok)q2Dzy6v
zd;tH#7r3ROp`xPVj?-*`rF-t&<E!Ii-+48gO@2K4#;yrMKheEK;rlIw{Q@A7#5H24
zj4Q%OU?N6Cj#;8;HIn3rS*lVQJwa@&l4?>-PnD!Hz9YbmODq#P`ij|^#Gg@?{sMJ$
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z9nk?hFj_?tOLB(~1Xv1ev?u$>#Z?0JXfS%jPtgTB&^_MMOElnPRFXrykHH?jS(IV@
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v5?PvQ=rqvTH9ir`P74)u!xitr`OuhNHJx17>NWhW$PQGBC*UR^y}<tf7n8zU

diff --git a/q02_confidence_interval/build.py b/q02_confidence_interval/build.py
index 023b81e..c80a556 100644
--- a/q02_confidence_interval/build.py
+++ b/q02_confidence_interval/build.py
@@ -1,3 +1,4 @@
+# %load q02_confidence_interval/build.py
 # Default imports
 import math
 import scipy.stats as stats
@@ -9,5 +10,14 @@
 
 # Write your solution here :
 
+def confidence_interval(sample):
+    z_critical = stats.norm.ppf(q = 0.95)
+    sample_mean=sample.mean()
+    sample_deviation=sample.std()
+    size=len(sample.values)
+    LCI=sample_mean-z_critical*(sample_deviation/(size**0.5))
+    UCI=sample_mean+z_critical*(sample_deviation/(size**0.5))
+    
+    return LCI,UCI
 
 
diff --git a/q02_confidence_interval/tests/__pycache__/__init__.cpython-36.pyc b/q02_confidence_interval/tests/__pycache__/__init__.cpython-36.pyc
index 2eb0cc486e78e2a412ba8dab98d1f27df5f7cde5..47aaa18229cfb11944047324f6407e9a7617915c 100644
GIT binary patch
delta 56
zcmX@exQmg)n3tDJ=;OZVi5%uC>G~P@xvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;D;xkCauhBA

delta 63
zcmdnRc#x69n3tF9Mq+E!L=JQ9JpGLP+*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWiv$>9K|Sr)DU

diff --git a/q02_confidence_interval/tests/__pycache__/test_q02_confidence_interval.cpython-36.pyc b/q02_confidence_interval/tests/__pycache__/test_q02_confidence_interval.cpython-36.pyc
index c3788ca888768b1814d7bddbf565e723201f41ad..c54d5bfd0054b13e666447669b492b04761c0746 100644
GIT binary patch
delta 59
zcmeAXY8B!z=H=xQ`nWH8BgY#?m1_Nr{M=Oi;?lg#oQ%YxOdw9o(+|%t$}TQQOitBL
N&QD3*EYI|o4FF%i6-595

delta 66
zcmZn_>Jj2F=H=zOk=Powk>d@cc9VWaer~FMVp2w?zDs^`X>Mv>NwI!<QEFvkNq(+=
VVor`iK~a8IYH~^OW(lUZYykBT7sUVo


From 83ad0c3f0b11a6b8616e756bec7dc75df7493b92 Mon Sep 17 00:00:00 2001
From: sunilhariharan <sunilhariharan@gmail.com>
Date: Thu, 11 Oct 2018 08:19:11 +0000
Subject: [PATCH 3/4] Done

---
 .../__pycache__/__init__.cpython-36.pyc       | Bin 174 -> 167 bytes
 q03_t_test/__pycache__/build.cpython-36.pyc   | Bin 523 -> 673 bytes
 q03_t_test/build.py                           |  15 ++++++++++++++-
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 180 -> 173 bytes
 .../test_q03_t_test.cpython-36.pyc            | Bin 2307 -> 2300 bytes
 .../__pycache__/__init__.cpython-36.pyc       | Bin 177 -> 170 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 604 -> 838 bytes
 q04_chi2_test/build.py                        |  11 ++++++++---
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 183 -> 176 bytes
 .../test_q04_chi2_test.cpython-36.pyc         | Bin 1938 -> 1931 bytes
 10 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/q03_t_test/__pycache__/__init__.cpython-36.pyc b/q03_t_test/__pycache__/__init__.cpython-36.pyc
index cac7d291ce27aa37820fd1dcd256be95534d4e6d..8b6dbcfa4e904b7082abb3d809aa4b0b5a3c0e09 100644
GIT binary patch
delta 56
zcmZ3-xSWy0n3tDJ=;OZVi5%uCA^I8lxvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%LM=rP!r++

delta 63
zcmZ3^xQ>y-n3tF9(7ooUi5%wI(fS$rxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@TlU)F=eHO<6

diff --git a/q03_t_test/__pycache__/build.cpython-36.pyc b/q03_t_test/__pycache__/build.cpython-36.pyc
index d55dfcffc99b8ed252ef8a44fbaf9847ab10a066..899b1e0d1cebb5e59f1daed0741aee09525bc534 100644
GIT binary patch
delta 483
zcmYjL&1w`u5bocZ-iaH9gy7Fbysd{U67VDj5{S2eL=eWq(wXj^o!R-LdnTBqmq0eR
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delta 333
zcmYjMze~h07){b&N6W3kxhPK7;fe@1i0Gh`gCH(agc6(FU3<-?G^udV;|51@kWLB?
zj`uHhbM`-Q@=GTZz6USweP7=9<-FMb$#CfZ?0v?k_{|sB7DC8|x`a{_0F83opawBK
zLX0d3pfxfaFelH5*{|e*tnr#OaGA3}Q*wtw_om&!2b+*|n8scyOTp=K_VI4c_9C=8
zM`@~69B9pzPL357Wo#Q0XoO9>KqtnLDV?P-AbFxi&9|s>A=B@DG?#)$^l_d=S2C>y
zUuqT2D!!sxiij4)ep$(!Td7v<Hy$5W4zvYkC$k*FN4S3py*N;5R<6c<n#yW#$?n8h
cdb$7XA9x^igEJvnUGQ@POqn=79uVLC1Gs}!P5=M^

diff --git a/q03_t_test/build.py b/q03_t_test/build.py
index f966b62..9a807f1 100644
--- a/q03_t_test/build.py
+++ b/q03_t_test/build.py
@@ -1,9 +1,22 @@
+# %load q03_t_test/build.py
 # Default imports
 import scipy.stats as stats
 import pandas as pd
 
 df = pd.read_csv('data/house_pricing.csv')
 
+def t_statistic(df):
+    alpha=0.01
+    df1=df.groupby('Neighborhood').get_group('OldTown')
+    u=df['GrLivArea'].mean()
+    x_bar=df1['GrLivArea'].mean()
+    sigma=df['GrLivArea'].std()
+    n=len(df1['Neighborhood'].values)
+    z=(x_bar-u)/(sigma/(n**0.5))
+    p_value=stats.norm.cdf(z)
+    if p_value<alpha:
+        return p_value,False
+    else:
+        return p_value,True
 
-# Enter Code Here
 
diff --git a/q03_t_test/tests/__pycache__/__init__.cpython-36.pyc b/q03_t_test/tests/__pycache__/__init__.cpython-36.pyc
index c48929092cfb36da263304e1c41ce26f2e59ebaa..cd844fcfe3d7249e61dd1ebdf90f4d20b1e7574d 100644
GIT binary patch
delta 56
zcmdnOxR#N_n3tDJ=;OZVi5%uCQTiGAxvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%L@P!)D!vu

delta 63
zcmZ3>xP_6!n3tF9Mq+E!L=JQ9ME#8X+*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWiv$zA}Rsup?x

diff --git a/q03_t_test/tests/__pycache__/test_q03_t_test.cpython-36.pyc b/q03_t_test/tests/__pycache__/test_q03_t_test.cpython-36.pyc
index ffd3551b78008c1e5a9bb300105c4015464df97f..9dc509938acc0a1966c9396a1ef5273b63caf0a1 100644
GIT binary patch
delta 59
zcmZn``Xk6;%*)Fq^l@MGMvlvjDvA0T`MIh3#ie<fIT?vXnLwPFryrhQlwDkqn4GGg
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delta 66
zcmew(*et|h%*)GlBe6AVBgbV%?F{{l{M=Oi#H5T&eV6>?(%jU%l4AYzqSVU7lKfo#
W#GD+3f};Ga)Z~)l&HowyvH<`KDj4+u

diff --git a/q04_chi2_test/__pycache__/__init__.cpython-36.pyc b/q04_chi2_test/__pycache__/__init__.cpython-36.pyc
index 07afcf050f12f3301d4c6770275250f5d539aa29..b1e454173e97ee598d85f75cd00a8ddc88f8439b 100644
GIT binary patch
delta 56
zcmdnUxQda(n3tDJ=;OZVi5%uC;rbc*xvBcarFoe-8Hq)iK%AJTAD&;7U0jfuoT{Ik
KpOQK;%N+m_5)<wK

delta 63
zcmZ3*xRH^=n3tF9(7ooUi5%wIarzngxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@TlidNZeiqXJ

diff --git a/q04_chi2_test/__pycache__/build.cpython-36.pyc b/q04_chi2_test/__pycache__/build.cpython-36.pyc
index 699bd6ac19c2845f16b2ff9f235a37aaeb9035d3..b30e84d1678d1fa126ee8bf7abf9f3cd5ea512b1 100644
GIT binary patch
literal 838
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diff --git a/q04_chi2_test/build.py b/q04_chi2_test/build.py
index 4f20455..b01ab63 100644
--- a/q04_chi2_test/build.py
+++ b/q04_chi2_test/build.py
@@ -1,10 +1,15 @@
+# %load q04_chi2_test/build.py
 # Default imports
 import scipy.stats as stats
 import pandas as pd
-
+import numpy as np
 df = pd.read_csv('data/house_pricing.csv')
 
-
-# Enter Code Here
+def chi_square(df):
+    price = pd.qcut(df['SalePrice'], 3, labels = ['High', 'Medium', 'Low'])
+    freqtab = pd.crosstab(df.LandSlope,price)
+    chi2,p_value,dof,expected = stats.chi2_contingency(freqtab)
+    test_result=np.all(expected>5)
+    return p_value,test_result
 
 
diff --git a/q04_chi2_test/tests/__pycache__/__init__.cpython-36.pyc b/q04_chi2_test/tests/__pycache__/__init__.cpython-36.pyc
index 45a1b92bf8f907964bb7391c2292492de4735b27..018a37267b513703c9c039f41a93b684ce042fec 100644
GIT binary patch
delta 56
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KpOQK;%NGC?mJ|j6

delta 63
zcmdnMxSf&1n3tF9Mq+E!L=JQ96#b0++*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWiv$-V%es}_a;

diff --git a/q04_chi2_test/tests/__pycache__/test_q04_chi2_test.cpython-36.pyc b/q04_chi2_test/tests/__pycache__/test_q04_chi2_test.cpython-36.pyc
index b2a8c04f4d985556ed1d8f547cba6347f75a6089..7c33a4f95ddc08b885ae4095e0b3599899f6d8f9 100644
GIT binary patch
delta 59
zcmbQl-_6fq%*)Fq^l@MGMvh~QD(U(e`MIh3#ie<fIT?vXnLwPFryrhQlwDkqn4GGg
NoS%}q`6uH{RsdQd6_o%0

delta 66
zcmeC?pTy5$%*)GlBe6AVBgZjD?L7UA{M=Oi#H5T&eV6>?(%jU%l4AYzqSVU7lKfo#
W#GD+3f};Ga)Z~)l&7T-&vH}3^1{f6p


From 37934603834dd66959460a200abdeb5648eb7637 Mon Sep 17 00:00:00 2001
From: sunilhariharan <sunilhariharan@gmail.com>
Date: Wed, 14 Nov 2018 13:47:24 +0000
Subject: [PATCH 4/4] Done

---
 q03_t_test/__pycache__/build.cpython-36.pyc | Bin 673 -> 664 bytes
 q03_t_test/build.py                         |  22 ++++++++------------
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/q03_t_test/__pycache__/build.cpython-36.pyc b/q03_t_test/__pycache__/build.cpython-36.pyc
index 899b1e0d1cebb5e59f1daed0741aee09525bc534..39bc4d95b85b40fc1034cccb7ecef38740ebfdb7 100644
GIT binary patch
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diff --git a/q03_t_test/build.py b/q03_t_test/build.py
index 9a807f1..e2ddff0 100644
--- a/q03_t_test/build.py
+++ b/q03_t_test/build.py
@@ -1,22 +1,18 @@
 # %load q03_t_test/build.py
 # Default imports
 import scipy.stats as stats
+import numpy as np
 import pandas as pd
-
+from statsmodels.stats.weightstats import ztest
 df = pd.read_csv('data/house_pricing.csv')
 
 def t_statistic(df):
-    alpha=0.01
-    df1=df.groupby('Neighborhood').get_group('OldTown')
-    u=df['GrLivArea'].mean()
-    x_bar=df1['GrLivArea'].mean()
-    sigma=df['GrLivArea'].std()
-    n=len(df1['Neighborhood'].values)
-    z=(x_bar-u)/(sigma/(n**0.5))
-    p_value=stats.norm.cdf(z)
-    if p_value<alpha:
-        return p_value,False
-    else:
-        return p_value,True
+    statistic, p_value = stats.ttest_1samp(a= df[df['Neighborhood'] == 'OldTown']['GrLivArea'],               
+                 popmean= df['GrLivArea'].mean()) 
+    
+    pval=np.array(p_value)
+    test_result=np.all(pval<0.01)
+    return p_value,test_result
+