PLEASE SOLVED THIS PROBLEM BY HAND AND IN MINITAB: The following data are direct solar intensity...

PLEASE SOLVED THIS PROBLEM BY HAND AND IN MINITAB:

The following data are direct solar intensity measurements (watts/m²) on different days at a location in southern Spain: 562, 869, 708, 775, 775, 704, 809, 856, 655, 806, 878, 909, 918, 558, 768, 870, 918, 940, 946, 661, 820, 898, 935, 952, 957, 693, 835, 905, 939, 955, 960, 498, 653, 730, and 753. Calculate the sample mean and sample standard deviation. Prepare a dot diagram of these data. Indicate where the sample mean falls on this diagram. Give a practical interpretation of the sample mean.

Expert Solution

The given sample observations are,

562, 869, 708, 775, 775, 704, 809, 856, 655, 806, 878, 909, 918, 558, 768, 870, 918, 940, 946, 661, 820, 898, 935, 952, 957, 693, 835, 905, 939, 955, 960, 498, 653, 730, and 753.

xi	xi-xbar	(xi-xbar)^2
562	-248.514	61759.34985
869	58.48572	3420.578859
708	-102.514	10509.17863
775	-35.5143	1261.264439
775	-35.5143	1261.264439
704	-106.514	11345.29291
809	-1.51428	2.293059061
856	45.48572	2068.950269
655	-155.514	24184.69284
806	-4.51428	20.37876906
878	67.48572	4554.321729
909	98.48572	9699.436059
918	107.4857	11553.17893
558	-252.514	63763.46413
768	-42.5143	1807.464429
870	59.48572	3538.550289
918	107.4857	11553.17893
940	129.4857	16766.55039
946	135.4857	18356.37897
661	-149.514	22354.52142
820	9.485715	89.97878906
898	87.48572	7653.750329
935	124.4857	15496.69324
952	141.4857	20018.20755
957	146.4857	21458.0647
693	-117.514	13809.60718
835	24.48572	599.5502391
905	94.48572	8927.550339
939	128.4857	16508.57896
955	144.4857	20876.12184
960	149.4857	22345.97899
498	-312.514	97665.17833
653	-157.514	24810.74998
730	-80.5143	6482.550089
753	-57.5143	3307.892979
	total	559830.7429

By using minitab,

Dotplot of sample observations

milcah answered 1 year ago

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