Unit 5 Inferences

Population

• The part of portion of the whole set that we actually examine to gather information

• Selecting those within easy reach

• The set of elements in which we are interested

• When participants choose to take part in a survey

Sample

• A sample collected that allows an equal chance for participation in the study

• The part or portion of the whole set that we actually examine to gather information.

• The set of elements in which we are interested

• When participants choose to take part in a survey

Bias

• Inaccurate representation of a population caused by poor sampling methods

• Selecting those within easy reach

• A sample collected that allows an equal chance for participation in the study

• When participants choose to take part in a survey

Simple Random Sample

• The part or portion of the whole set that we actually examine to gather information

• Selecting those within easy reach

• Inaccurate representation of a population caused by poor sampling methods

• A sample collected that allows an equal chance for participation in the study

Convenience Sample

• When participants choose to take part in a survey

• That part or portion of the whole set that we actually examine to gather information

• Selecting those within easy reach

• A sample collected that allows an equal chance for participation in the study

Voluntary Response Sampling

• When participants choose to take part in a survey

• The set of elements in which we are interested

• Inaccurate representation of a population caused by poor sampling methods

• The part or portion of the whole set that we actually examine to gather information

Measure of Center

• The one that occurs the most often.

• The lowest

• Summarizing data with a single number that shows the middle of the data set. Also called Measures of Central Tendency.

• The highest

Mean

• The lowest

• The highest

• The average

• The average

Mode

• The one that occurs the most often

• The average

• The middle of the data set

• The highest

Maximum

• The lowest

• The highest

• The middle of the data set

• The average