1 DRAWING STATISTICS CHART– MINITAB Lesson 1 At the AB battery factory, KCS staff measured the weight (g) of 10 plates during the first casting and recorded the following data 9 46; 10 61; 8 07; 12 21.
DRAWING STATISTICS CHART– MINITAB Lesson At the AB battery factory, KCS staff measured the weight (g) of 10 plates during the first casting and recorded the following data: 9.46; 10.61; 8.07; 12.21; 9.02 ; 8.99; 10.03; 11.73; 10.99; 10.56 Determine the values: mean, standard deviation, variance, median Draw a chart with the above data Solution: - Import data in Minitab: -Go to Stat / Basic statistic / Display Discripitive Statistic - Click the box Variables: Select C1 and press Select - Click the Statistics button: select the Mean parameters; Standard deviation; Variance; Median -Click OK -Chọn hình Session xem kết quả: Draw a Run chart: -Go to Stat/ Quality tool/ Run chart - In the Data Arranged as: Item Single Column: press C1 and press Select Item Subgroup Size: press C1 and click OK -Resulut: Similar exercises: Draw a Run chart for the price recording data of a scarce commodity as follows: Date 10 11 12 13 14 15 16 17 18 19 20 Price 35 38 41 43 47 43 48 52 53 55 59 56 52 55 59 63 61 62 65 67 Bài 2: Draw a graph of the thickness distribution (mm) of the sheets as follows: 8.02; 8.15; 7.89; 7.95; 7.77; 8.20; 7.79; 7.90; 8.02; 8.06; 7.86; 7.92; 8.04; 7.98; 8.01; 8.06; 7.80; 7.96; 7.95; 8.15; 8.02 Solution: - Data input -Go to Graph \ Histogram - Lelect With Fit and press OK -At the item Graph Variables: select C1 and press OK Similar exercises: Plot the Hitogram chart for recording data set “Thickness (mm) of corrugated iron as follows” 3.56 3.48 3.41 3.55 3.48 3.59 3.4 3.48 3.52 3.41 3.46 3.56 3.37 3.52 3.48 3.63 3.54 3.5 3.48 3.45 3.48 3.5 3.47 3.44 3.32 3.59 3.46 3.56 3.46 3.34 3.5 3.52 3.49 3.5 3.40 3.47 3.51 3.50 3.45 3.44 3.42 3.47 3.45 3.45 3.52 3.38 3.48 3.52 3.46 3.47 3.43 3.48 3.44 3.44 3.54 3.52 3.50 3.46 3.54 3.47 3.52 3.46 3.50 3.48 3.46 3.45 3.68 3.48 3.54 3.41 3.49 3.50 3.49 3.46 3.43 3.48 3.60 3.46 3.48 3.48 3.44 3.56 3.46 3.52 3.30 3.31 3.46 3.52 3.49 3.54 3.5 3.38 3.46 3.46 3.46 3.46 3.52 3.56 3.41 3.47 Bài 3: Draw a Scatter chart for the data collected in the laboratory as follows: PhH2O Độ axit 6.92 6.59 7.14 7.1 6.91 7.3 6.64 6.74 6.58 6.1 5.84 5.21 6.98 7.08 6.98 5.3 7.3 7.41 6.12 2.95 2.70 2.65 2.7 2.7 2.55 2.5 2.8 2.4 2.5 2.35 2.7 2.4 2/5 2.55 2.55 2.3 2.4 2.3 Solution: -Import data: -Go to Graph \ Scatterplot -Choose With Regression, press OK -At box Y-Variables select “ Ph-nước”; X-Variables select “ Độ axit”; press Ok Result: - Find the regression equation and the correlation coefficient R: 10 -In the box of Variables select C2 (Defect) and subgroup size select C1( Batch size) -Press Ok, result: 28 Similar exercises Office staff checked 20 times of the secretary's input and got the following results: Group sample Number data entry 200 200 Number wrong entry 6 10 11 12 13 14 15 16 17 18 19 20 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 0 14 Plot P control chart Lesson : nP Chart KCS staff checks finished product details at a mechanical factory and records the data as: Sample s Comp onents are checke d Defected Compon ent 100 100 6 10 11 12 13 14 15 16 17 18 19 20 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 5 2 6 15 Draw a chart of NP control Solution: -Import minitab data 29 -Go to Stat\ Control charts\ Attributes charts\ NP -In the box of Variables select “ C2” (Số chi tiết bị khuyêt tật) ô Subgroup size chọn “C1” (Số chi tiết kiểm tra) 30 -Press Ok, resutt: Similar exercises KCS staff checked the quality of apples before exporting and recorded the data through 20 checks as follows: Nhóm mẫu Số lượng thùng Số có chấm 10 11 12 13 14 15 16 17 18 19 20 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 20 28 24 21 32 33 31 29 30 34 32 24 29 27 37 27 28 31 27 30 Draw a chart of nP control Lesson 9: C Chart KCS staff checked the number of defects in the batch of rubber gloves and obtained the data through 20 checks as follows: Nhóm mẫu Số khuyết tật 10 11 12 13 14 15 16 17 18 19 20 7 Draw a chart of C control 31 Solution - Minitab data entry -Go to Stat\ Control chart\ Attributes chart\ c 32 -In the box of Variables chọn C2 (Số khuyết tật) -Press Ok, Chart result: 33 Similar exercises: KCS staff checked the number of bruises in the consignment of 200 peaches and recorded the data after checking 20 lots: Nhóm mẫu Số vết thâm 10 11 12 13 14 15 16 17 18 19 20 27 32 24 31 42 38 33 35 35 35 39 41 29 34 34 43 29 33 33 38 Draw a C control chart Lesson 10: U control chart The KCS staff of the XYZ Garment Company KCS check the number of pinholes in collars of different quantity of finished products The data recorded after 20 tests was as follows: Cỡ mẫu Số lỗ kim 10 10 10 10 10 13 13 13 13 13 13 13 13 13 12 12 12 17 17 17 27 32 24 31 42 38 33 35 35 35 39 41 29 34 34 43 29 33 33 38 Draw a U control chart Solution: -Input minitab date 34 -Go to Stat\ Control chart\ Attributes chart\ U -In the box of Variable select C2 (Số lỗ kim) and the box of Subgroup size select C1( Cõ mẫu): 35 -Press Ok, Chart result: Similar exercises At the company producing paper rolls XYZ, KCS staff recorded the number of defects in 20 rolls of different areas and were recorded as follows: Số tt Diện tích cuộn (m2) Số khuyết tật 10 11 12 13 14 15 16 17 18 19 20 18 19 17 37 47 23 28 26 27 38 25 24 29 28 30 29 38 40 25 26 10 14 12 10 8 14 13 12 Draw a U control chart 36 Lesson 11: Pareto Chart In an auto parts manufacturing factory, KCS staff can figure out the number of defective parts corresponding to the following types of defects: Defect symbolt Defect name A Hàn B Nối C Hở D Lắp ráp E Không đạt moment xoắn Draw the Pareto Chart Defect frequency 198 25 103 18 72 Solution -Minitab data input -Go to Stat \ Quality tool\ Pareto charts 37 -Select Chart defects table Label in: Select “ Tên khuyết tật” Frequencies in: Select “ Số sản phẩm hư” -Click Ok, Chart result: 38 Similar exercises KCS staff at a mechanical plant noted the number of defects corresponding to the following types of defects: Defect symbolt F G H I J Defect name Sai kích thước Sai vật liệu Sai hình dáng Do gia cơng tinh Khác Defect frequency 40 15 16 10 Draw the Pareto Chart Lesson 12 : Fish bone Chart KCS staff investigates factors affecting productivity at a cement tile factory and records the following reasons: Man Material Kinh nghiệm Khơng đồng Chưa huấn luyện Làm việc thiếu nhiệt tinh Không đạt yêu cầu Không kiểm tra đầu vơ Reason Method Chưa có hương dẫn cơng việc Result Measurement Machine Thiết bị đo cũ Khơng bảo trì thường xuyên Không Lạc hậu hiệu chỉnh Năng suất thấp Draw a fishbone diagram showing causes and results Solution -Minitab data input 39 -Go to Stat\Quality tool\ Cause and Effect -Trong ô Causes chọn C1, C2, C3, C4, C5 tương ứng với nhãn : cơng nhân, máy móc, vật liệu, phương pháp làm, đo lường -Box Effect inputs : suất thấp; ô Title đánh “ biểu đồ xương cá” 40 -Click Ok, Chart result: 41 ... average limit and control limits of the I-MR chart b Drawing I-MR Control Chart Problem Solving -Import minitab data -Go to Stat Control chart Variables chart for IndividualI-MR 23 -In the box... Calculate the average and control limits of the Xbar-S chart b) Draw Xbar-S Control Chart -Import Minitab data -Go to Stat/ Control charts/ Variables charts for Subgroups/ Xbar-S 19 - Select Observation... 19 20 7 Draw a chart of C control 31 Solution - Minitab data entry -Go to Stat Control chart Attributes chart c 32 -In the box of Variables chọn C2 (Số khuyết tật) -Press Ok, Chart result: