# STA 115 In-Class Notes Practice

Quiz by Cindy Nguyen, updated more than 1 year ago
 Created by Cindy Nguyen over 2 years ago
2
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### Description

This is a practice quiz based off of notes I've taken in class.

## Resource summary

### Question 1

Question
Statistics is a set of [blank_start]procedures[blank_end] for analyzing info to help make a decision.
• procedures

### Question 2

Question
Science of data: used for collecting, organizing, displaying, describing, and [blank_start]analyzing[blank_end] data. Data: pieces of [blank_start]information[blank_end] collected.
• information
• analyzing

### Question 3

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Population: entire group Sample: [blank_start]subset[blank_end] of the population
• subset

### Question 4

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Various ways of data collection: - surveys - observational studies (is there a [blank_start]relationship[blank_end]?) - experiments (is there [blank_start]cause[blank_end] and effect?)
• relationship
• cause

### Question 5

Question
Surveys Census: entire [blank_start]population[blank_end] is asked to respond to questions Sample Survey: [blank_start]sample[blank_end] is selected and asked
• population
• sample

### Question 6

Question
Observational Study vs. Experiment Observational Study: "What is" - look don't touch, no [blank_start]influence[blank_end] Problems with this? - can't determine [blank_start]cause[blank_end] & effect - if you want a cause & effect you would have to actively manipulate a variable ([blank_start]Experiment[blank_end]) Experiment: determines cause & effect
• influence
• cause
• Experiment

### Question 7

Question
Inferential Statistics: analyses for data from a sample to infer something about a [blank_start]population[blank_end] Probability: likelihood that a certain outcome will [blank_start]occur[blank_end] Using statistics in the Research process: 1. Identify [blank_start]objective[blank_end] 2. Collect [blank_start]data[blank_end] 3. Organize, display, and [blank_start]describe[blank_end] data 4. [blank_start]Analyze[blank_end] data
• population
• occur
• objective
• data
• describe
• Analyze

### Question 8

Question
It is important to avoid biased data.
• True
• False

### Question 9

Question
Convenience sampling: selecting individuals who are [blank_start]easiest[blank_end] to reach Voluntary sampling: Individuals [blank_start]choose[blank_end] to be in the sample
• easiest
• choose

### Question 10

Question
You should always do convenience sampling or voluntary response sampling. You avoid bias by either selecting yourself or having people volunteer.
• True
• False

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