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# Formative Guide #1

Question | Answer |
---|---|

is a collection of methods for planning experiments, obtaining data, and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on the data. | Statistics |

is the complete collection of elements to be studied. | Population |

is a sub-collection of elements drawn from a population. | Sample |

are things that describe a sample’s contents. | Descriptive Statistics |

is making inferences about what sample data may indicate about a population | Inferential Statistics |

data can be separated into different categories distinguished by some non-numerical characteristic. | Qualitative |

data consists of numbers representing counts or measurements. | Quantitative |

data result from either a finite number of possible values or a countable number of possible values. | Discrete |

numerical data results from infinitely many possible values that can be associated with measurement error. | Continuous |

sampling is when members of the population are selected in such a way that each has an equal chance of being selected. | Random |

sampling is when you subdivide the population into at least two different sub-populations that share the same characteristics and then draw a sample from each subgroup. | Stratified |

are numbers that describe a population. | Parameters |

are numbers that describe a sample. | Statistics |

sampling is when you divide the population into sections and randomly select some of those sections, and then choose all the members from the selected sections. | Cluster |

sampling is when you choose some starting point and then select every kth element in the population. | Systematic |

is when the mean is significantly less than the median. | Left Skewed |

is when the mean is significantly greater than the median. | Right Skewed |

asking people their political affiliation State of residence Gender | Nominal |

rating how good a movie is by awarding it one, two, three or four stars Letter grade in a class (A, B, C, D, or F) Size of soft drink ordered at a restaurant (small, medium, large) | Ordinal |

measuring the temperature in Fahrenheit | Interval |

measuring the time it takes to run a race | Ratio |

x with a line over it is known as | Mean |

Sx = (x is only on calculator, standard symbol is "s") | Standard Deviation |

number that appears most often in the set. | Mode |

Med = | Median |

the difference between the highest and lowest values in the set. | Range |

Standard Deviation Squared = | Sample Variance |

Greek sigma x = | Population Deviation |

Created by:
Joel.olivio