L1 - Introduction

• Statistics come from the Latin word?


  Status
• Status means?

  State
• It is a science (branch of Mathematics) that

  deals with collection, presentation,

  analysis, and interpretation of data?

  Statistics
• What are the branches of Statistics?

  Descriptive and Inferential Statistics
• Descriptive Statistics -summarizes or describes the important characteristics of a given set of data.
• It involves the collection, organization, summarization, and presentation of data?

  Descriptive Statistics
• The average body temperature of 50 people is 36.75°C. This is an example of what statistic?


  Descriptive
• The deviation of scores of all examinees from the recent board examination for teachers is 7. What type of statistic is used here?

  Descriptive
• The monthly income of a nurse in the Philippines is ₱22,500. This is an example of what type of statistics?

  Descriptive
• Inferential Statistics - aims to give information about the population by studying the characteristics of the sample drawn from it.
• It is the branch of statistics that interprets and draws conclusions from data?

  Inferential Statistics
• Inferential Statistics uses what?

  Hypothesis testing
• Hypothesis is a statment.
• Hypothesis testing refers to the process of testing a hypothesis by comparing the observed data to the predicted value.
• A large sample of men, aged 48, was studied for 18 years. For unmarried men, approximately 70% were alive at age 65. For married men, 90% were alive at age 65. This is an example of what statistic?

  Inferential
• Inference refers to the process of drawing conclusions from given information.
• State facts and proven outcomes from a population?

  Descriptive
• Analyze samplings to make predictions about larger populations?

  Inferential Statistics
• Set - a group or collection of objects or numbers, considered as an entity unto itself.
• Universe is also known as a target population.
• Universe is the set of all entities under study.
• The entire group of people or objects to which the researcher wishes to generalize the study findings?

  Universe
• Population is also known as?

  Accessible population
• Population – is the set of complete collection or totality of all possible values of the variables.
• The portion of the universe to which the researcher has reasonable access?

  Population
• It may be a subset of the target population?

  Population
• Sample - a subset or sub-collection or portion of elements drawn from a population.
• Variable – refers to the different characteristics of the population or the sample, that continuously varies.
• Parameter is a numerical measure that describes a population (totality).
• Statistics is a .numerical measure that describes a sample (portion)
• Parameter = Population
• Statistics = Sample
• The population mean IQ of the students of a certain university is?

  Parameter
• The sample mean IQ of 45 students of a certain university is 101?

  Statistics
• Population is the measurable quality is called a parameter.
• The population is a complete set.
• Population contains all members of a specified group.
• Sample is the measurable quality is called a statistic.
• The sample is a subset of the population.
• Reports have a margin of error and confidence interval?

  Sample