Populations

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Population
Everything or everybody that could possibly be involved in an investigation e.g students in a school
1 of 7
Sample
Gathers data from some of the population
2 of 7
Representative sample
Should contain all the characteristics of the population to avoid bias. A sample that is too small may not represent the population and may bias the results
3 of 7
Sampling units
The people or items that are to be sampled
4 of 7
Sampling frame
A list of all the members of the population from which the sample is taken
5 of 7
Pilot survey
A small sample analysed first before any large- scale samples
6 of 7
Pre-test
A pilot where questions for a questionnaire are usually tried out
7 of 7

Other cards in this set

Card 2

Front

Gathers data from some of the population

Back

Sample

Card 3

Front

Should contain all the characteristics of the population to avoid bias. A sample that is too small may not represent the population and may bias the results

Back

Preview of the back of card 3

Card 4

Front

The people or items that are to be sampled

Back

Preview of the back of card 4

Card 5

Front

A list of all the members of the population from which the sample is taken

Back

Preview of the back of card 5
View more cards

Comments

shateerone

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يُمكن مكافحة حشرات القراد الموجودة في المنزل، والتخلّص منها من خلال اتّباع التدابير الآتيّة: ترتيب الفوضى الموجودة في المنزل، وتجنب ترك الملابس المتسخة ملقاة على الأرض؛ لأن القراد يمكن أن يختبئ في أي مكان، ويفضل التواجد في البيئات الدافئة والجافة. غسل الملابس المتسخة التي يُعتقد أنها تحتوي على القراد في الغسالة على أعلى درجة حرارة يُمكن أن يتحملها القماش، ويحذر من وضع هذه الملابس في سلة الغسيل؛ لأنها ستتسبب في انتقال القراد إلى الملابس الموجودة هناك. تنظيف المنزل بالكامل، وتنظيف الرفوف، والزوايا، وكافة المناطق التي يتم تجاهلها أثناء التنظيف اليوميّ، وكنس جميع الأرضيات، وفراش الحيوانات الأليفة، والشقوق الموجودة بالجدران والأرضيات، وأسفل وأعلى الأثاث، وإطارات الأسقف بالمكنسة الكهربائيّة؛ لقدرتها على سحب القراد الموجود هناك، ثم التخلص من كيس المكنسة بعد الانتهاء من ذلك.

مكافحة حشرات الكويت

kira143

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