From 8b5d5491bd8e0348484840f38e320c262ec06b02 Mon Sep 17 00:00:00 2001 From: zleyyij Date: Thu, 18 Jan 2024 14:26:31 -0700 Subject: [PATCH] vault backup: 2024-01-18 14:26:31 --- education/statistics/Sampling.md | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/education/statistics/Sampling.md b/education/statistics/Sampling.md index 438926c..6360798 100644 --- a/education/statistics/Sampling.md +++ b/education/statistics/Sampling.md @@ -15,18 +15,19 @@ In the above example: - The *parameter* was *6%* - The *sample* was *1004 taxpayers* - The *statistic* was *13%* - +## Sampling +| Sample Type | Description | +| ---- | ---- | +| Simple random | Advantages:
- Procedure is impartial
- Law of Averages
Disadvantages
- Not always possible
- Can be very expensive | +| Quota Sampling | Attempts to get certain proportions based on key characteristics. Quota sampling doesn't guarantee that the selection is an accurate representation. | +| Cluster Sampling | Divide population into subgroups, randomly select a subgroup, and sample all of the subjects in that group | ## Simple Random Samples -Advantages: -- Procedure is impartial -- Law of Averages -Disadvantages -- Not always possible -- Can be very expensive ## Bias | Bias Type | Description | | ---- | ---- | | Selection | When the procedure that selects the sample is biased | | Non-Response | Those that don't respond to a survey may have different characteristics than those that do respond | -| | | +| Response | When the question is worded in a leading way to elicit a certain response. | +| Volunteer response | Self selecting, individuals volunteer to answer | +| Measurement | Interviewing method influences the response, uses loaded words or ambiguities. |