warg statiqFigure 3: Examples of a line graph and a bar graphwolt doidw alLine Graphquory gazdtast tePolato yield (kg/ha)og adsordatlus on:22.00018.000Numerical scale14.000600020001earldeure qu Numerical scalealqmsa anlA ne grach has one or more lines tunimconnecting a series of powGraph 1 Potalo Yieldta 1AVides bus01vs. Polassium in Soil 12.SI EI 1.01 al Graph 2 Red Blood Cell Count During Human Growthanaged tedW8.SI 2.01 e.II.I.SI EI AO1:alamcaixals der ass, resear5.7-5.6eesras es 5.55.410.000mg ad id woning og ovs ont ai tadWSelam 201 stonia-0 103: 200Potassium added (kg/ha)axistab toStest te aslams TГИОГТАТЯЯЯЯЯove odt ai tedWolam not sunime xafta zolarulAverage RBC count (million/mm³ af blood)bute yasar woH E5.3$.25.T5.04.94.64.5Use the following guidelines for organizing and drawinggraphs.On both line and bar graphs you must draw twolines, a horizontal and a vertical line. Thehorizontal line is the x-axis and the vertical lineis the y-axis. Each axis must be labeled toindicate what it represents.0AtUse graph paper or a grid containing equallyspaced squaresProvide a title for the graph that clearly explainswhat the graph depicts.Bar Graph010m as ondoad tog blaiy onto affbarthDOS Dq20Numerical acala2 4 6+8 10 12 2 4MonthsTims8 10 12 14 14.- (M) (F)YearsMI[The x-axis and y-axis usually have a numericalscale with appropriate units. However, on somegraphs the x-axis or y-axis may be labeled ratherthan having a numerical scale.Exercise# 3 Use Graphs 1 and 2 in Figure 4 to answerthe following questions.INTERPRETATIONS FOR GRAPH 11. When no potassium is added to the soil,approximately what is the potato yield? 2. What happens to the potato yield per hectare as morepotassium is added to the soil?3. Approximately, what is the potato yield when 200kg/ha of potassium has been added to the soil?INTERPREATIONS FOR GRAPH 21. At birth, what is the average number of RBC permm² of blood?Average number is2. What appears to happen to the number of RBCsbetween birth and death?3. What happens to the number of RBCs between theages of six and eight?4. After 14 years of age, do males or females have ahigher RBC count?Determining AveragesOccasionally, an average of data recorded duringan experiment is needed. To find an average, add thenumber of items in a group, and then divide the total bythe number of items. For example, in a garden the heightsof six sunflowers are 135 cm, 162.5 cm, 180 cm, 235 cm,185 cm, and 167.5 cm. To find the average height of thesunflowers, add the heights of the sunflowers and divideby the total number of sunflowers. What is the averageheight of the sunflowers? Your answer should be 177.5cm.Exercise# 4 Find the average for the following groupof data. Then use the results to answer the questions thatfollow.In an experiment on plant growth and overcrowding,plants of the following heights are in three equal-sizedcontainers.Flower Pot 1: 20 cm and 18 cmFlower Pot 2: 12 cm, 10.8 cm, 11.2 cm, 12.4 cmFlower Pot 3: 7.5 cm, 8 cm, 6 cm, 6.2 cm, 5.8 cm, 7.3 cmINTERPRETATIONS1. What is the average height of the plants in eachflower pot?2. In which flower pot did the plants grow thetallest? Explain.TheExercise 5 Find the average for the following groupof data. Express your answers to the nearest tenth.In a sample group of students, the number of breaths perminute was taken at rest and after exercise. The resultswere as follows.At RestMales: 10.1, 13, 12.5, 10.2, 13.1, 11.8Females: 10.4, 13, 12.1, 11.9, 10.5, 12.8After Exercise:Males: 18.9, 23.7, 22.6, 21.3, 19.2, 20.6Females: 25, 26.7, 29, 35.3, 33.1, 31.7INTERPRETATIONS1. What is the average number of breaths perminute for males at rest?numwereyFemales at rest?2. What is the average number of breaths perminute for males after exercise?IsFemales after exercise?3. How many students make up the sample group?AverAumber is4. What is the average number of breathsminute for the entire group at rest?After exercise?per5. Do males or females take more breaths perminute at rest?After exercise?

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