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11.4 Collecting Data. Goal Statement. w ill identify populations and sampling methods. Collecting Data. One way to collect data about a group is to conduct a ________________. The entire group that you want information about is called a ________________ .

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Presentation Transcript
goal statement
Goal Statement
  • will identify populations and sampling methods
collecting data
Collecting Data
  • One way to collect data about a group is to conduct a ________________.
  • The entire group that you want information about is called a ________________.
  • It is usually difficult to survey every member of a population. Instead, you can survey a __________________, which is part of a population.
sampling methods
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods1
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods2
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods3
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods4
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods5
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods6
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods7
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods8
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods9
Sampling Methods

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods10
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods11
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample,random sample,

convenience sample, stratified sample

sampling methods12
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods13
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods14
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods15
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods16
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods17
Sampling Methods

Describe the population and the sampling method.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

sampling methods18
Sampling Methods

Describe the population and the sampling method.

Give an example of a survey of a population

that would use random sampling.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

identifying potentially biased samples
Identifying Potentially Biased Samples
  • When conducting a survey, you want a sample that is representativeof the population.
identifying potentially biased samples1
Identifying Potentially Biased Samples
  • When conducting a survey, you want a sample that is representativeof the population. A sample that is not representative is a biased sample.
  • The most reliable way to have a representative, unbiasedsample is to use _____________________.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

identifying potentially biased samples2
Identifying Potentially Biased Samples
  • When conducting a survey, you want a sample that is representativeof the population. A sample that is not representative is a biased sample.
  • The most reliable way to have a representative, unbiasedsample is to use random sampling.

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

identifying potentially biased samples3
Identifying Potentially Biased Samples

Why might non-random samples

be used when conducting surveys?

Self-selected sample, systematic sample, random sample,

convenience sample, stratified sample

biased questions
Biased Questions

Questions that encourage or lead to particular responses are biased questions. When creating a survey, you should phrase questions to avoid bias.

biased questions1
Biased Questions

Tip: If you can tell what the people are who are asking the

question want as an answer, then it is probably biased.

biased questions2
Biased Questions

“Are you in favor of the plan to plant new shade trees

in the downtown area?”

biased questions3
Biased Questions

“Are you in favor of the plan to plant new shade trees

in the downtown area?”

b) “Do you support the plan to build a new stadium?”

slide34

What are some things to consider when conducting a survey?

√ whom you want to sample

√ how you want to phrase your questions

misleading graphs and statistics
Misleading Graphs and Statistics

Graphs and statistics are often used to make

advertisements visually

appealing. Some ads,

however, use graphs

and stats to mislead

consumers.

identifying misleading graphs
Identifying Misleading Graphs

Explain why the graph is misleading.

identifying misleading graphs1
Identifying Misleading Graphs

Explain why the graph is misleading.

identifying misleading graphs2
Identifying Misleading Graphs

Explain why the graph is misleading.

identifying misleading statistics
Identifying Misleading Statistics

Explain why the statistics are misleading.

identifying misleading statistics1
Identifying Misleading Statistics

Explain why the statistics are misleading.

identifying misleading statistics2
Identifying Misleading Statistics

Explain why the statistics are misleading.

homework
HOMEWORK

GREEN CHALLENGE:

  • p.603 – 605 # 1 – 3all, 5 – 16all
  • Misleading Graphs WS # 1 – 13all (WS on Moodle)

BLUE CHALLENGE:

  • 11.4 Blue Worksheet
  • Misleading Graphs WS # 1 – 13all (WS on Moodle)