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STATS - Wk1, Ch1

Nightingale Intro to Statistics, Week 1 - Chapter 1 (Definitions and Data)

QuestionAnswer
Identify the type of data that would be used to describe a response. Number of Students Enrolled at Skyline College Quantitative - Discrete
00 female Osprey hatchlings were tracked until they died or succeeded in laying eggs. Based on the data, the researchers concluded that somewhere between 12% and 18% of all female Osprey hatchlings in the US succeed in growing up to lay their own eggs. Inferential Statistics
A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Match the vocabulary word with its corresponding example. PART 1 All heart attack patients that the cardiologist has cared for or will care for in the future-POPULATION. The average recovery time for the 32 heart attack patients-STATISTIC. The list of all 32 heart attack patients' recovery times-DATA.
A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Match the vocabulary word with its corresponding example. PART 2 The average recovery time for all heart attack patients that the cardiologist has or will treat-PARAMETER. The recovery time for a heart attack patient-VARIABLE. The 32 heart attack patients who were observed by the cardiologist-SAMPLE.
A bank manager is interested in the average length of time that customers are willing to wait in line before they give up and leave the bank. Match the vocabulary word with its corresponding example. PART 1 All of the bank's customers-POPULATION. The length of time a customer waits before leaving the bank-VARIABLE. The average length of time that all customers will wait before leaving the bank-PARAMETER.
A bank manager is interested in the average length of time that customers are willing to wait in line before they give up and leave the bank. Match the vocabulary word with its corresponding example. PART 2 The 25 customers that the manager observed leave-SAMPLE. The average length of time that the 25 customers waited before leaving the bank-STATISTIC. The list of times for the 25 customers who left the bank-DATA.
Suppose you want to estimate the percentage of videos on YouTube that are cat videos. It's impossible to watch all videos on YouTube so a random video picker to select 1000 videos. You find that 2% of these are cat videos. The percentage of all videos on YouTube that are cat videos is a/an:POPULATION PARAMETER. 2% is a/an:SAMPLE STATISTIC. A video in your sample is a/an:OBSERVATION. Whether or not a video is a cat video a/an:VARIABLE.
Political pollsters may be interested in the proportion of people that will vote for a particular cause. Match the vocabulary word with its corresponding example. PART 1 All the voters in the district-POPULATION. The list of 750 Yes or No answers to the survey question-DATA. The proportion of all voters from the district who will vote for the cause-PARAMETER.
Political pollsters may be interested in the proportion of people that will vote for a particular cause. Match the vocabulary word with its corresponding example. PART 2 The proportion of the 750 survey participants who will vote for the cause-STATISTIC. The 750 voters who participated in the survey-SAMPLE. The answer Yes or No to the survey question-VARIABLE.
A researcher wants to survey 2000 Americans for an obesity study. Match the strategies to their corresponding sampling techniques. PART 1 Researcher posts the survey on the Internet and waits until 2000 people have responded-CONVENIENCE Researcher picks 20 different small groups each containing 100 people. Then makes sure that everyone from each group answers the surveY-CLUSTER
A researcher wants to survey 2000 Americans for an obesity study. Match the strategies to their corresponding sampling techniques. PART 2 Researcher gets the list from the Census Bureau and uses a computer to randomly select 2000 people-SIMPLE RANDOM. Researcher makes sure that the proportion of respondents from each state matches the proportion population to the US population-STRATIFIED
In a study, the sample is chosen by asking our 10 best friends on Facebook What is the sampling method? Convenience
In a study, the data you collect is Age in years. What is the level of measurement? ratio
A team of researchers is testing the effectiveness of a new HPV vaccine. They randomly divide the subjects into two groups. Group 1 receives a placebo, Group 2 receives vaccine. NeitHer the patients or the doctors knew which group they were in. Which is the treatment group-GROUP 2. Which is the control group-GROUP 1. Is this study blind, double blind, or neither-DOUBLE BLIND. Which best describes this research-CONTROLLED EXPERIMENT
Determine if example of a sampling error or non sampling error. A sociologist surveyed 300 people about their level of anxiety on a scale of 1 to 100. The person inputting the data transposed 6 numbers causing the statistics to have errors. Non Sampling Error
12% of all people are left handed. A researcher randomly selected 200 people and found16% of them were left handed. No mistakes were made in data collection or data recording. The 4% difference is due to Sampling Error
If the sample size is much smaller than the population size, say 20 times smaller, then random sampling with replacement and random sampling without replacement are nearly equivalent. True
Created by: alishalynne93
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