Surveys Flashcards

1
Q

Sampling error

A

ikke nok respondenter

ikke nok data til å generalisere

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2
Q

Coverage error

A

ikke alle deltakere i en populasjon har samme mulighet til å bli utvalgt

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3
Q

Measurement error

A

dårlig formulerte spørsmål

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4
Q

Non-response error

A

stort spenn i hvor mange som ble utvalgt og de som faktisk svarte

stor forskjell mellom de som svarte og de som var i utvalget

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5
Q

Stryker ved surveys

A
○ Få et større antall respondenter
○ Rask måte å samle inn mye data
○ Geografisk uavhengig
○ Kan skaffe et overblikk
○ Kan gi nøyaktige populasjonsestimater
○ … hvis strukturert random sampling
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6
Q

Svakheter ved surveys

A

○ Overfladiske “overblikksdata”, men ikke i dybden
○ Åpner ikke for oppfølgingsspørsmål
○ Utsatt for recall bias

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7
Q

Random sampling (probabilistic sampling)

A
  • known exactly how probable it is for a participant to be selected
  • chosen at random
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8
Q

Stratification

A
  • can help to ensure that you have an appropriate number of participants from each subset
  • useful when subpopulations have unequal representation
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9
Q

Nonprobabilistic approaches?

A
  • volenteer opn-in panels
  • self selected surveys
  • snowball-recruitment
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10
Q

Survey validity

A
  • Ask for demographic data (age, gender)

- Oversampling

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