STATISTICS ppt. G11.pptx
- 1. It is a scientific body of knowledge that deals with the collection, organization or presentation, analysis, and interpretation of data. STATISTIC S
- 2. Steps in conducting a Research:
- 3. Collection It refers to the gathering of data or information.
- 4. Organization or Presentation It involves summarizing data or information in textual,
- 5. Analysis It involves describing the data by using statistical methods or
- 6. Interpretation It refers to the process of making conclusions based on the analysed
- 8. Descriptive Statistics It is a statistical procedure concerned with describing the characteristics and
- 9. Descriptive Statistics Generally, it involves gathering, organizing, presenting, and
- 10. Descriptive Statistics For example We may describe a collection of persons by stating how many are poor and how many are rich, how many are
- 11. Inferential Statistics It is a statistical procedure that is used to draw inferences or information about properties or characteristics by a large group of people, places, or things on the basis of the information obtained
- 12. Inferential Statistics It involves analysis of data so that meaningful interpretation or conclusion about a large group of
- 13. Inferential Statistics For example Suppose we want to know the brand of fertilizer used by the farmers of a barangay Ayusan II and we do not have enough time and money to interview all the residents of that barangay, we may just ask selected famers. With the data obtained from the
- 14. Tell whether the following situations will make use of descriptive statistics or inferential statistics. Descriptiv e Inferential Inferential A psychologist investigates if there is a significant relationship between mental age and chronological age. A teacher computes the average grade of her students and then determines the top ten students. A manager of a business firm predicts future sales of the company based on the present sales. A researcher studies the effectiveness of a new fertilizer to increasing food production. Inferential A janitor counts the number of furniture inside school. A sports journalist determines the most popular basketball player for this year. A school administrator forecast future expansion of a school. A market vendor investigates the most popular brand of vinegar. An engineer calculates the average height of the buildings along Taft Avenue. A dermatologist tests the relative effectiveness of a new brand of medicine in curing pimples and other skin diseases. Descriptiv e Inferential Inferential Inferential Descriptiv e Inferential
- 16. Population It refers to a large collection of objects, persons, places, or things. It is usually denoted or represented by N.
- 17. Population For example: Suppose a researcher wants to determine the average income of the farmers of barangay Ayusan II and there are 1500 farmers in the barangay. Then all of these farmers
- 18. Sample It is a small portion or part of a population. It could also be defined as a subgroup, subset, or representative of a population. It is usually denoted
- 19. Parameter It is any numerical or nominal characteristics of a population. It is a value or measurement obtained from a population. It is usually referred to as the
- 20. Statistics It is an estimate of a parameter. It is any value or measurement obtained from
- 21. Data (singular form is datum) – are facts, or set of information or observations under study. More specifically, data are gathered by the researcher from the population or sample. Data may be
- 22. Qualitative data – are data which can assume values that manifest the concept of attributes. These are sometimes called categorical data. Data falling in this category cannot be subjected to meaningful arithmetic operations. They cannot be
- 23. Quantitative data – are data which are numerical in nature. These are data obtained from counting or measuring. In addition, meaningful arithmetic operations can be one with this of data. Test scores and
- 24. Classify the following as quantitative or qualitative data.
- 33. Quantitative Number of possible outcome in throwing a die.
- 35. Variable – is a characteristics or property of a population or sample which makes the members different from each other. If the class is consist of boys and girls, and then the gender is a variable in this class. Height is also a variable because different people have different heights. Variables may be classified on the basis whether they
- 36. Discrete Variable – is that can assume a finite number of values. In other words, it can assume specific values only. The values of a discrete variable are obtained through the process of counting. Continuous Variable – is one that can assume infinite values within a specified interval. The values are obtained through
- 37. Identify the following as continuous or discrete.
- 38. Discrete Number of possible outcome in throwing a die.
- 41. Discrete Life span of a person.
- 46. Discrete Number of chairs in the room.
- 48. Dependent Variable – A dependent variable is a variable which is affected by another variable. Independent Variable – an independent variable is one which affects or influences the dependent variable.
- 49. The effect of Computer Assisted Instruction on the Students’ Achievement in Mathematics. Dependent variable : Students’ Achievement in Mathematics Independent variable : Computer assisted instruction
- 50. From the following research title, underline the independent variable and encircle the Dependent variable
- 51. 1. A manager of a business firm predicts future sales of the company based on the present sales. 2. A psychologist investigates if there is a significant relationship between mental age and chronological age. 3. A researcher studies the effectiveness of a new fertilizer to increasing food production. 4. A school administrator forecast future expansion of a school. 5. A dermatologist tests the relative effectiveness of a new brand of medicine
- 52. A manager of a business firm predicts future sales of the company present sales. Future sales
- 53. A psychologist investigates if there is a significant relationship between mental age and Mental age Chronological age
- 54. A researcher studies the effectiveness of a new fertilizer to increasing New fertilizer Food production
- 55. A school administrator forecast future expansion of a school. School. Future expansion
- 56. A dermatologist tests the relative effectiveness of a new brand of medicine in curing pimples and other New brand of medicine Other skin diseases pimple s
- 57. Constant – is a property or characteristics of a population or sample, which makes the member of the group similar to each other. For example, if a class is
- 58. Identify whether the given situation is countable or measurable. Raise LIKE if it is countable and
- 59. LIKE Number of notebooks in the
- 60. UNLIKE Amount of salt needed to bake a
- 61. LIKE Number of students who got an average grade
- 64. Each group will fill up the following data: Name of the student: Number of siblings: Allowance in a day: Religion: Height(in cm): Weight(in kg): Final Grade in General
- 65. Each group will design in a bond paper their face book group profile using the given data. Rubrics: Design –------ 10 Organization of data –
- 66. 2. What is the unit of measurement used for each information(if there are any)? Guided questions: 1. What are the informations gathered from the members to complete the facebook group profile? 3. Which among the information gathered are countable?measurable?
- 67. Number of siblings Name of student Allowance in a day Religion Height Weig ht Final grade in General Mathematics The information that we gathered are referred to as the variable of the study. Variable is a characteristic that is observable or measurable in every unit of the universe.
- 68. Classifications of Variable 1. Qualitative 2. Quantitative Classifications of Quantitative 1. Discrete 2. Continuous