Difference between the smoking and non-smoking pubs

Question

Discussion:

The study is to find out if the analysis of the data supports a smoking ban or not. I have conducted a Mann Whitney, and N-Par test and discovered that the data is skewed.

column a = id of bar/pub
column b = levels of particles in bar.
column c = levels of uvpm (a measure of amount of tobacco smoke in the air) in the pubs/bars.

column d = levels of nicotine in pubs/bars.
column e = ventilation system (yes-fan ect.) (no= natural ventilation).
column f = smoking/non smoking.

1. = smoking area

2. = non-smoking area.

Smoking and non-smoking pubs.

Brief summary to clarify the difference between the smoking and non-smoking pubs.

o The spreadsheet presents data on levels of pollutants in pubs/bars.

o The first 57 pubs/bars are smoking throughout.

o The rest of the pubs/bars are classed as "non-smoking". This means that, minimally, a non-smoking room is provided. Only two of them are non smoking throughout. Unfortunately, the researchers have not identified which two! In the majority of cases (pubs/bars with a non-smoking area), measurement of the pollutants were taken in the non-smoking area.

name	particles	uvpm	nicotine	vent	tpye_s_n
a	58.33	37.22	10.71	1	1
aa	50	21.16	31.32	1	1
ab	62.5	28.81	26.02	1	1
ac	75	46.7	100.9	1	1
ad	89.58	50.57	75.97	1	1
ae	89.58	60.76	153.65	1	1
af	50	24.96	86.01	1	1
ag	22.92	0.58	0.85	1	1
ah	225	168.29	288.46	1	1
ai	156.25	127.15	149.9	1	1
aj	200	156.28	96.79	1	1
ak	187.5	145.7	195.04	1	1
al	89.58	63.25	54.28	1	1
am	143.75	107.95	141.83	1	1
an	108.33	80.96	85.32	1	1
ao	225	181.64	161.77	1	1
ap	85.42	62.97	63.61	1	1
aq	256.25	192.54	89.33	1	1
ar	262.5	205.58	74.94	1	1
as	256.25	198.48	75.29	1	1
at	256.25	198.57	59.69	1	1
au	183.33	143.36	218.53	1	1
av	141.67	94.47	69.87	1	1
aw	64.58	34.19	22.81	1	1
ax	68.75	42.94	24.68	1	1
ay	83.33	56.15	23.96	1	1
az	143.75	68.97	0.6	1	1
b	58.33	35.59	23.06	1	1
ba	125	73.93	361.68	1	1
bb	56.25	30.2	61.79	1	1
bs	79.17	42.93	48.16	2	1
bt	41.67	16.93	48.87	2	1
bu	100	71.3	53.54	2	1
bv	97.92	71.66	64.19	2	1
bw	87.5	55.85	80.37	2	1
bx	47.92	25.25	32.73	2	1
by	85.42	47.38	97.51	2	1
bz	81.25	60.24	53.55	2	1
c	60.42	32.28	80.16	1	1
ca	83.33	47.69	40.16	2	1
cb	147.92	111.42	2.34	2	1
d	37.5	21.36	91.28	1	1
e	550	410.57	421.43	1	1
f	60.42	37.49	7.79	1	1
g	45.83	27.39	9.14	1	1
h	66.67	48.95	70.94	1	1
i	16.67	5.66	4.77	1	1
q	75	11.12	25.6	1	1
r	77.08	35.57	27.93	1	1
s	39.58	18.86	78.6	1	1
t	29.17	14.86	166.62	1	1
u	127.08	63.01	64.73	1	1
v	193.75	138.52	121.36	1	1
w	202.08	142.45	164.93	1	1
x	110.42	69.21	162	1	1
y	64.58	42.92	119.95	1	1
z	83.33	42.88	67.99	1	1
bc	22.92	8.7	40.17	1	2
bd	22.92	6.64	26.73	1	2
be	81.25	50.39	73.38	1	2
bf	137.5	91.93	195.89	1	2
bh	43.75	25.07	93.37	1	2
bi	204.17	106.26	77.94	1	2
bj	29.17	12.49	14.62	1	2
bk	33.33	13.78	19.74	1	2
bl	50	20.94	25.25	1	2
bm	122.92	70.05	13.66	1	2
bn	279.17	212.05	0.6	1	2
bo	97.92	60.07	42.52	1	2
bp	29.17	12.3	15.06	1	2
bq	18.75	17.49	36.45	1	2
br	70.83	18.89	0.6	1	2
cc	58.33	10.5	56.76	2	2
cd	47.92	22.7	72.81	2	2
ce	214.58	161.73	44.78	2	2
cf	97.92	69.44	27.6	2	2
j	60.42	29.07	97.08	1	2
k	118.75	64.29	155.92	1	2
l	33.33	16.88	14.08	1	2
m	295.83	200.19	38.39	1	2
n	66.67	37.37	14.76	1	2
o	122.92	38.78	11.61	1	2
p	102.08	24.62	4.86	1	2