Analysis of yearly sales of sugar between three wholesalesr in Kaduna Central Market by ISAAC

TABLE 4.2 Data below shows the yearly sales (in bags) of sugar between three wholesalers in kaduna central market kaduna, kaduna state Nigeria.

YEAR	SHOP 1	SHOP 2	SHOP 3
2000	41	50	30
2001	40	50	31
2002	45	57	29
2003	49	55	35
2004	50	60	40
2005	67	90	51
2006	97	109	67
2007	100	125	88
2008	109	139	95
2009	115	145	91
2010	130	160	100
2011	141	187	112
2012	159	198	118
2013	170	200	120
2014	190	250	139

SOURCE : KADUNA CENTRAL MARKET KADUNA,

KADUNA STATE NIGERIA.

    

ANALYSIS OF DATA

The independent t–test for two samples (comparison of means between the three shops under study)

TABLE 4.4  Group statistics between shop 1 and shop 2 chiefdom.

Group Statistics
	Shops	N	Mean	Std. Deviation	Std. Error Mean
Yearly sales(in bags)	Shop 1	15	100.20	50.478	13.033
	Shop 2	15	125.00	64.766	16.722

TABLE 4.5  Group independent sample test for equality of means and the levene’s test for equality of variance between shop 1 and shop 2

Independent Samples Test
		Levene's Test for Equality of Variances		t-test for Equality of Means
		F	Sig.	T	df	Sig. (2-tailed)
Yearly sales	Equal variances assumed	1.257	.272	-1.170	28	.252
	Equal variances not assumed			-1.170	26.424	.253

Hypothesis statement.

H₀ : There is a significant difference in the mean sales between shop 1 and shop 2

H₁: There is no significant difference in the mean sales between shop 1 and shop 2

Decision rule : Reject H₀ if significant value   value, otherwise accept.

Decision : Since the significant value (0.252) is  value (0.05) we accept H₀

Conclusion : There is a significant difference in the mean sales between shop 1 and shop 2

TABLE 4.6 Group statistics between shop 1 and shop 3 Group statistics
	Shops	N	Mean	Std. Deviation	Std. Error Mean
Yearly sales	Shop 1	15	100.20	50.478	13.033
	Shop 3	15	76.40	38.080	9.832

TABLE 4.7 Group independent sample test for equality of means and the levene’s test for equality of variance between shop 1 and shop 2

Independent Samples Test
		Levene's Test for Equality of Variances		t-test for Equality of Means
		F	Sig.	T	df	Sig. (2-tailed)
Ginger  yearly productioin	Equal variances assumed	1.061	.312	1.458	28	.156
	Equal variances not assumed			1.458	26.037	.157

Hypothesis statement.

H₀: There is a significant difference in the mean produce of ginger between shop 1 and shop 3.

H₁: There is no significant difference in the mean sales between shop 1 and shop 3

Decision rule: Reject H₀ if significant value   value, otherwise accept.

Decision: Since the significant value (0.156) is  value (0.05) we accept H₀

Conclusion: There is a significant difference in the mean produce of ginger between shop 1 and shop 3 .

TABLE 4.8 Group statistics between shop 2 and shop 3. Group Statistics
	Shops	N	Mean	Std. Deviation	Std. Error Mean
Yearly sales	Shop 2	15	125.00	64.766	16.722
	Shop 3	15	76.40	38.080	9.832

TABLE 4.9 Group independent sample test for equality of means and the levene’s test for equality of variance between Shop 2 and Shop 3 Independent Samples Test
		Levene's Test for Equality of Variances		t-test for Equality of Means
		F	Sig.	T	Df	Sig. (2-tailed)
Yearly Sales	Equal variances assumed	4.651	.040	2.505	28	.018
	Equal variances not assumed			2.505	22.647	.020

Hypothesis statement.

H₀ : There is a significant difference in the mean sales between shop 2 and shop 3

H₁: There is no significant difference in the mean sales between shop 2 and shop 3

Decision rule: Reject H₀ if significant value   value, otherwise accept.

Decision: Since the significant value (0.018) is  value (0.05) we reject H₀

Conclusion: There is no significant difference in the mean sales between shop 2 and shop 3

TABLE 4.10 the table below shows the mean, standard deviation and total number of years in each of the three shops under study.

Descriptive Statistics
	Mean	Std. Deviation	N
Shop 1	100.20	50.478	15
Shop 2	125.00	64.766	15
Shop 3	76.40	38.080	15