From 372c700e80ffa2bce18c1d1a2d2d2e59d9a670a2 Mon Sep 17 00:00:00 2001
From: NIkhila79 <nikhila.dalvi@gmail.com>
Date: Sun, 27 Jan 2019 08:34:26 +0000
Subject: [PATCH 1/4] Done

---
 __pycache__/__init__.cpython-36.pyc           | Bin 163 -> 151 bytes
 .../__pycache__/__init__.cpython-36.pyc       | Bin 177 -> 165 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 560 -> 530 bytes
 q01_cond_prob/build.py                        |   8 ++++++++
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 183 -> 171 bytes
 .../test_q01_cond_prob.cpython-36.pyc         | Bin 1691 -> 1679 bytes
 6 files changed, 8 insertions(+)

diff --git a/__pycache__/__init__.cpython-36.pyc b/__pycache__/__init__.cpython-36.pyc
index 2ba0c8128ed226d8795f0b8b0cc1481272d86b4c..e8392d9810f91262f19449d32bb46b25c0725742 100644
GIT binary patch
delta 51
zcmZ3?IGvHhn3tDpMUHRGL=JO#7yXR<+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GS(X5Xo)CWk

delta 63
zcmbQvxR{Z{n3tF9(7ooUi5%wI0s0yFxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@T<17KC-xiSo

diff --git a/q01_cond_prob/__pycache__/__init__.cpython-36.pyc b/q01_cond_prob/__pycache__/__init__.cpython-36.pyc
index a5c1ab27a925d7c6ab904d43c42e33fb15ea64d6..2f517ecaaf64e86e7361d0a1b0fb9b740f28e9ca 100644
GIT binary patch
delta 51
zcmdnUxRjB@n3tDpMUHRGL=JQLApMN|+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GS?&Oi01&qT

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

diff --git a/q01_cond_prob/__pycache__/build.cpython-36.pyc b/q01_cond_prob/__pycache__/build.cpython-36.pyc
index 4654504299c0bacbf40adc47f518204d14780447..fef5921a2d02f13bcba41598aa38a32bb7976ca2 100644
GIT binary patch
delta 189
zcmdnMGKodmn3tD}HP<)hC?f;IV+JI^1Y|n^ak0@vWlfG$wp7+;Mn;B-K9+pUKv5PT
zb_U6MOq}dF@qwv3^DU;7v?#8U{F20+_@eys;wawyoRs*I{PH|7cO^p+J5c>EfBlU7
z+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKzmb&NKA+#rM5fCK|07o*tZQ;gw)AUlgW
OfCLW{2NM?y2Ri`31}iB5

delta 219
zcmbQlvVld}n3tC;QGRaJNk#^S#|%h-3CMN;;$p3d%9;~HEcsY~91wN}3HnT&?a5Nh
zT*Ex^iD@RwEvA&TD6YhuocN6V(&E(OC_xAvpP3i$pOX@jU!E5wker{Fl39|OpO=^u
zUr>~vw34BS9ca|AX#I@*+*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9JvYsR}^lS*gh-
o#gh{lZ3K8g_HzIU21YJMF-DEas~E%iL9Q)k0}?z;986qn03(Sw<^TWy

diff --git a/q01_cond_prob/build.py b/q01_cond_prob/build.py
index 46a16ee..fbc08e4 100644
--- a/q01_cond_prob/build.py
+++ b/q01_cond_prob/build.py
@@ -1,3 +1,4 @@
+# %load q01_cond_prob/build.py
 # So that float division is by default in python 2.7
 from __future__ import division
 
@@ -7,6 +8,13 @@
 
 
 # Enter Code Here
+def cond_prob(df):
+    total_rows = df.shape[0]
+    old_town_rows = df[df['Neighborhood'] == 'OldTown'].shape[0]
+    return (old_town_rows / total_rows) * ((old_town_rows - 1)/(total_rows-1)) * ((old_town_rows-2) / (total_rows - 2))
 
 
 
+cond_prob(df)
+
+
diff --git a/q01_cond_prob/tests/__pycache__/__init__.cpython-36.pyc b/q01_cond_prob/tests/__pycache__/__init__.cpython-36.pyc
index 9e8f52b9670fef7c8ebeab5aaf783861596b3735..87acb5c91c5720ed52d7f8f9e7e6fc703ee73370 100644
GIT binary patch
delta 51
zcmdnaxSEl}n3tD}E!Q_@B8RzrgnmYTZmPbYXLd$rPNKP`et3RSc5y*sa;koEeoE@Z
GEMEY2zYs0}

delta 63
zcmZ3@xSf&1n3tF9Mq+E!L=JQ96#b0++*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWivalQbaW)^$^

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..e613411cf503cc24e905bde379a8a568a24ec7a1 100644
GIT binary patch
delta 54
zcmbQu+t15k%*)Hgmg^g{kz+5Te3E`fer~G1pJ#SPW=^8HrG9vRQFd`bVsff}a(+tc
J<`0akSpc$Q5y}7n

delta 66
zcmeC@oz2T(%*)GlBe6AVBgbAw?L7UA{M=Oi#H5T&eV6>?(%jU%l4AYzqSVU7lKfo#
W#GD+3f};Ga)Z~)l%}*Ftvj70@ZWtH<


From fe44248e58428369f607a75c9878731c801a4525 Mon Sep 17 00:00:00 2001
From: NIkhila79 <nikhila.dalvi@gmail.com>
Date: Sun, 27 Jan 2019 08:38:09 +0000
Subject: [PATCH 2/4] Done

---
 .../__pycache__/__init__.cpython-36.pyc       | Bin 187 -> 175 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 718 -> 685 bytes
 q02_confidence_interval/build.py              |  16 ++++++++++++++++
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 193 -> 181 bytes
 ...est_q02_confidence_interval.cpython-36.pyc | Bin 2316 -> 2304 bytes
 5 files changed, 16 insertions(+)

diff --git a/q02_confidence_interval/__pycache__/__init__.cpython-36.pyc b/q02_confidence_interval/__pycache__/__init__.cpython-36.pyc
index 741ad2df56ebd795144517f30579112c8725c917..6da9537e13e60c08bc4740bf0c4857bb90ab97f1 100644
GIT binary patch
delta 51
zcmdnZxSo;2n3tDpMUHRGL=JQL82ya=+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GS%CnPMiAcs

delta 63
zcmZ3_xSNr~n3tF9(7ooUi5%wI8TuLdxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@T;{pM-=N9n*

diff --git a/q02_confidence_interval/__pycache__/build.cpython-36.pyc b/q02_confidence_interval/__pycache__/build.cpython-36.pyc
index b478df2185179a11ca8a5a753fb3aedba6bb2ba4..ca874afe658c680ec0676f6a0a4787a4e87c0014 100644
GIT binary patch
delta 497
zcmYjOy>1jS5cYW2yUzWQA^{}IR4XK|04a(<0Vxd>qyZ_yAf2qWFSnQdi|r!<?J7u@
zmLj?bpr+tecmTI4=y(7sW>+9(toc6A_?sDx{FD7)dymKC!A<e{!+T1|4Y_3)lNadr
z<@MhFT@@;JMZ`c4^wt`HD0oAX==w`?nZmy!jvSyLbwzIx8nPs7(gHFd(*_(}1`S=q
z1JVXAT(V`PK+&(zhE3Q6JEUc(jn|}M_emT5zuzNm+(b=0r#Le>KArdW`*{K$&My-#
z0_&7#X|*by4-4rQKD6h?d1jq-)`w+f3K7)xT!e*|Wx{=AWl`rE71?PaJ(OaC+EPiQ
zX4;s_i1_pDqs&)YaBW?NO|=;2)rB^*JS#FMhO4^nf`?u7otP0W{O8?tQ5AZ6{OW9x
z<#PXEdQzD)Tgy~W(@N>hFL=872D?u>vE4=>!0}AzgmOB95ts?)lA&QpVrbK>{`9C{
p!o-^snjCInzSs2gZowEIJbzYHYL)B5?i*~^io>9vfEe;Se*ulAdT#&#

literal 718
zcmZuvyN(kv6tz8`$t2mVkXXSY3TUUvAZS-S#7amAZ9{|HjJ&od@n~MLok)q2Dzy6v
zd;tH#7r3ROp`xPVj?-*`rF-t&<E!Ii-+48gO@2K4#;yrMKheEK;rlIw{Q@A7#5H24
zj4Q%OU?N6Cj#;8;HIn3rS*lVQJwa@&l4?>-PnD!Hz9YbmODq#P`ij|^#Gg@?{sMJ$
zvwI}D<N2~%TUGQ%3*9c}!fyQdgZZR4?~LO54@M{>9&=Bv-YEfPSP5VZ@gBl{1lXer
z9nk?hFj_?tOLB(~1Xv1ev?u$>#Z?0JXfS%jPtgTB&^_MMOElnPRFXrykHH?jS(IV@
zev@I3S7tagOBrnxZ+&bXch=LkGYyOSzGRVg($j{!C74_p2Q5q9t1R(}<xO8JHa+EH
z5MYyCA&hof@S1^`R2y~<nyutU7Rs2;_=lovOD$C^RH0j^%!b$Bk(q&yzX~3#Q8~X|
z>ioJB>qfQC<_n{?+;vUP>-u?bx=IOPbz3R}`<mB9uno@~w(`}Bm&Jb$$#2)Xmh*mV
z&fu&e>;MR-_#EOAKfqxpo0$}7xR}uWb{@3NFcY8j!%eIwy<~B_Zu+e!ZSPYUrYwfx
v5?PvQ=rqvTH9ir`P74)u!xitr`OuhNHJx17>NWhW$PQGBC*UR^y}<tf7n8zU

diff --git a/q02_confidence_interval/build.py b/q02_confidence_interval/build.py
index 023b81e..5fd7ecc 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
@@ -8,6 +9,21 @@
 
 
 # Write your solution here :
+def confidence_interval(sample):
+    sigma = sample.std()
+    n = sample.count()
+    standard_error = sigma/math.sqrt(n)
+    
+    z_value = stats.norm.ppf(q = 0.95)
+    
+    estimate = z_value * standard_error
 
+    lower_limit = sample.mean() - estimate
+    upper_limit = sample.mean() + estimate
+    return lower_limit, upper_limit
+
+
+
+confidence_interval(sample)
 
 
diff --git a/q02_confidence_interval/tests/__pycache__/__init__.cpython-36.pyc b/q02_confidence_interval/tests/__pycache__/__init__.cpython-36.pyc
index 2eb0cc486e78e2a412ba8dab98d1f27df5f7cde5..c286e1019b8978f2061004e5eb674fc28d7135d9 100644
GIT binary patch
delta 51
zcmX@exRsH^n3tDpMUHRGL=JQLB>jy1+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GS>XVda1i$Z

delta 63
zcmdnWc#x69n3tF9Mq+E!L=JQ9JpGLP+*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWivap3@^6c(fa

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..bffec1d9c00859caa19d80d23b4c2b89b51e7683 100644
GIT binary patch
delta 54
zcmeAXY7pWu=H=yDk>eY)k>d@ce3^bmer~G1pJ#SPW=^8HrG9vRQFd`bVsff}a(+tc
JW_hN!Yyi>05)J?W

delta 66
zcmZn=>Jj2F=H=zOk=Powk>d@cc9VWaer~FMVp2w?zDs^`X>Mv>NwI!<QEFvkNq(+=
VVor`iK~a8IYH~^OW?`ncYyk7J7rOue


From 4b7487480d5c6487351f9b7871e49ac1ba20bee8 Mon Sep 17 00:00:00 2001
From: NIkhila79 <nikhila.dalvi@gmail.com>
Date: Sun, 27 Jan 2019 08:40:55 +0000
Subject: [PATCH 3/4] Done

---
 .../__pycache__/__init__.cpython-36.pyc       | Bin 174 -> 162 bytes
 q03_t_test/__pycache__/build.cpython-36.pyc   | Bin 523 -> 626 bytes
 q03_t_test/build.py                           |  14 ++++++++++++++
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 180 -> 168 bytes
 .../test_q03_t_test.cpython-36.pyc            | Bin 2307 -> 2295 bytes
 5 files changed, 14 insertions(+)

diff --git a/q03_t_test/__pycache__/__init__.cpython-36.pyc b/q03_t_test/__pycache__/__init__.cpython-36.pyc
index cac7d291ce27aa37820fd1dcd256be95534d4e6d..960a6a3396b68c3a011fd36b0dc4a1cb121f7876 100644
GIT binary patch
delta 51
zcmZ3-xQLO%n3tDpMUHRGL=JO#fBlU7+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GSuOyKYY?jd

delta 63
zcmZ3)xQ>y-n3tF9(7ooUi5%wI(fS$rxvBbzNg0{?F8Rr&xv6<2#ro+*sg;Q(`MLUu
SIXMaiMfq8&$tA@T<6Ho(I2OGC

diff --git a/q03_t_test/__pycache__/build.cpython-36.pyc b/q03_t_test/__pycache__/build.cpython-36.pyc
index d55dfcffc99b8ed252ef8a44fbaf9847ab10a066..5e026ea3510d2263f8ed9eca31e3ba7122bf38a1 100644
GIT binary patch
literal 626
zcmYjO&59H;5KhuR)AO@8S=mRJ%e1lw6~rGF)P;3CC<tMp$#ya`naOmrNqS_Y=QJL?
z_#nQEzCd3+2|j@!SjlM%>Psb5ef6d4{N!ZxwRwB}4<qyo-7y033vl-sfFq6-T4Rc1
zL}(Jvlx8AX=bRid9q@#wUl1)sAqGc`q2fK7X1}2t%|D-V=2^MYtrL~8vX;$qR=Zsd
zU8CiIDfk7rdj-%z{TVvoE=1%E@njP)yb%vdI?~}aIU=5ZBiH1R98#aG(=O%NksPuv
z?Xm@d{`s5^U)w9Wduauulev(~)s40*tvMaMQ~ZPe)J#FV(Pk@Hv;6rZ*q`Uqtk0Zh
z-qEr5!ujf<V_QShkkpgL(7_T2y|B}~Cw$S5fS^^(OWpK&NL7Lk1A%m2*1%uwm}&*R
z-?U1-*&FRw!bx}OF0{3x_TP~mz_0&a!Hl+|oL_EMQn5!*%8%M^oME*nYt2O|n}x8V
z@sg=3>Vs+OH4v1y56&xJ1+C>xD;1xaeLwawDQcL6$&LUJF7Q2aN+!e(;Wi!8v8$!o
z&mx}<d+&3@8qQo#4DYk1-I~2k!g~Rq<`pc?hGoV2sQV5SG4JVC^Hzyxp(=JALDzze
HvSRoj6UwWS

literal 523
zcmYjO%}yIJ5VpNPNfWptaiYhDL$(zXhpOU7RN_*F13e(C(#qL!5{KQjvAsd5!iiq{
z03h)IywYBKLVW{HjQ7M?^J(n)|9r5$J@~)(#J^HP{*iaW&^|$RpAdimEy<E{+F6W8
zGFryK?kP_og7^>NDbPzYN?tIUOn&cx@FH92#>w1RRj7JCF5IfXE}cY(G3ptrJ4EnU
zeM2_bXO{rGW{A;lxFasvJ%RWy`^E0)9oyi6<eJPF_Dd&xYa-QrG1YdVHSpd=2|x91
z%|D#mA8K`Kr5Lf63f?o?R8rLQ$A=)#$D^oCoEP5lq4(1H{EHKn;c*B;AA?yt^m&L-
z&Z`0o<SS7&@|oBa2Y$W6^(vW(=|W}Sb<tF^_AZ-SxfWhmnJCMT#_FXk@Kx0_Y0<Al
z*;RB%O6SUMJ|E;h5B;-gqe>W?wN0@6Fc1?MB6Od2FQXnGx<Z-txSQGr3ft6(8iZ?^
mfwqskLXIrkkk{pOlfHvq$mxHpG&H3=3SaEPE(6+UgY*ru=ZXmc

diff --git a/q03_t_test/build.py b/q03_t_test/build.py
index f966b62..e3718ac 100644
--- a/q03_t_test/build.py
+++ b/q03_t_test/build.py
@@ -1,9 +1,23 @@
+# %load q03_t_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 t_statistic(df):
+    population = df['GrLivArea']
+    sample = df[df['Neighborhood'] == 'OldTown']['GrLivArea']
+        
+    statistic, p_value = stats.ttest_1samp(sample, popmean= population.mean())
+
+    nullHypothesisIsCorrect = np.greater(p_value, 0.9)
+        
+    return p_value, nullHypothesisIsCorrect
+t_statistic(df)
+
+
diff --git a/q03_t_test/tests/__pycache__/__init__.cpython-36.pyc b/q03_t_test/tests/__pycache__/__init__.cpython-36.pyc
index c48929092cfb36da263304e1c41ce26f2e59ebaa..946e9c2bc4cd83263284180f1299e540aaf29340 100644
GIT binary patch
delta 51
zcmdnOxPp<xn3tDpMUHRGL=JQLQ2mVj+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GSzZ8-l@P-K

delta 63
zcmZ3%xP_6!n3tF9Mq+E!L=JQ9ME#8X+*JL<q>M~`m;B_?+|<01V*T`@)XKz?{9OIS
SoE(LMqWrAX<dWivab5tNWfpJ%

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..cf8fcabd5a4992f8493f0da941b777458613de1a 100644
GIT binary patch
delta 54
zcmZn``Yy;}%*)HQBF8soBgbV%`566-{M=N1KhNxp%$!7XOa1WtqU_>=#N<@{<ouM>
J&1_76*#O`f5<dU{

delta 66
zcmew^*et|h%*)GlBe6AVBgbV%?F{{l{M=Oi#H5T&eV6>?(%jU%l4AYzqSVU7lKfo#
W#GD+3f};Ga)Z~)l&A%A`vH<`I%oytc


From 3a4f160f027ae41a9d8673d9e934baf9dc43dc67 Mon Sep 17 00:00:00 2001
From: NIkhila79 <nikhila.dalvi@gmail.com>
Date: Sun, 27 Jan 2019 08:43:58 +0000
Subject: [PATCH 4/4] Done

---
 .../__pycache__/__init__.cpython-36.pyc       | Bin 177 -> 165 bytes
 .../__pycache__/build.cpython-36.pyc          | Bin 604 -> 647 bytes
 q04_chi2_test/build.py                        |  11 +++++++++++
 .../tests/__pycache__/__init__.cpython-36.pyc | Bin 183 -> 171 bytes
 .../test_q04_chi2_test.cpython-36.pyc         | Bin 1938 -> 1926 bytes
 5 files changed, 11 insertions(+)

diff --git a/q04_chi2_test/__pycache__/__init__.cpython-36.pyc b/q04_chi2_test/__pycache__/__init__.cpython-36.pyc
index 07afcf050f12f3301d4c6770275250f5d539aa29..c8394725fd6ebbd9799542c5652bf51cbe9e2a3e 100644
GIT binary patch
delta 51
zcmdnUxRjB@n3tDpMUHRGL=JQLApMN|+*Ex(&+LrMoJ4a={qX#v?BasN<W&9S{FKy*
GS?&Oi01&qT

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

diff --git a/q04_chi2_test/__pycache__/build.cpython-36.pyc b/q04_chi2_test/__pycache__/build.cpython-36.pyc
index 699bd6ac19c2845f16b2ff9f235a37aaeb9035d3..8562dbfa3e4512dfed160c403379ca0d16c22263 100644
GIT binary patch
delta 477
zcmYk2OH1TH5P-Y7J4sL0x$H@IK~VNGhb0FOD(vcjmvzxm7?#CGkdSWYm6>Ea89_+!
z5W({>Kf?bMJP4k=c@_^=2No=-S69_nML+O6M{c#-em6NjuYr&!@<AxZUDRv`jUozS
zG6o4vL?vrHmyTv*SJ4Wjr<mfmL<%jmR{@a4@9#GPXI<0-3+kcC5mF#*jVNjdlrvxz
zEA5-RMoNlxTF?S2TC$vtdBG|;=Or(l(k;Eh$(^xVILfQ&CGC@r=*d<;jP<D*Mf#cH
z0?B`k21Dr{Yc-lLUfd1YItpj1A1A3EU>)UgzvI<3Rg(XU=6Su`fX$$$vs8Kmqr+UA
zj;N`+lzxWftU=3G{2yXCB9>>c{>{hW^&}W3QyugUC&N)3Ztn(v6En%uFw#MkD80Og
zpI<&<V`jSvtb%|Q_zY$RvrcRI24DZ!vukHIpQhKwepW5;40RD@SH{D%X*G8IgR#h3
V{Fo+c9_u|zXcqX07u4rMyaR<bYyJQL

delta 426
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diff --git a/q04_chi2_test/build.py b/q04_chi2_test/build.py
index 4f20455..dd51b61 100644
--- a/q04_chi2_test/build.py
+++ b/q04_chi2_test/build.py
@@ -1,10 +1,21 @@
+# %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):
+    salesPrice = pd.qcut(df['SalePrice'], 3, ['High', 'Medium', 'Low'])
+    landSlope = df['LandSlope']
+    crosstab = pd.crosstab(landSlope, salesPrice)
+    chi2,pval,dof,expected = stats.chi2_contingency(crosstab)
+    return pval, np.greater(pval, 0.5)
+
+
+chi_square(df)
 
 
diff --git a/q04_chi2_test/tests/__pycache__/__init__.cpython-36.pyc b/q04_chi2_test/tests/__pycache__/__init__.cpython-36.pyc
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delta 63
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