Populations Samples and Generalizing from a Sample

Inferential Statistics consists of which of the following:

HINT: THERE ARE 3 CORRECT CHOICES.

• summarization of data

• determining relationships among variables

• performing estimations and hypothesis tests (evaluating claims about a population based on data from samples)

• generalizing from samples to populations

• presentation of data

Dividing a high school student population by grade level and randomly selecting 10 students from each grade level to get a 40 student sample represents:

HINT: 1 CORRECT CHOICE

• cluster sampling

• stratified sampling

• systematic sampling

• random sampling

A group of subjects selected from a population is a _________________.

• Portion

• Sample

• Group

• Data

If the population is ALL 7th Graders

Then you want to take a sample from ALL 7th graders.

A sample is part of the population but not all of it.

Select the one below that is true

• A sample is a smaller group selected from the population

• A sample is the entire population

• A sample is a larger group than the population

• A representative sample is not related to the population

7.SP.1

• A

• B

• C

• D

Choose the true statement(s) about the census and sample shown.

• The sample could be considered too small.

• The sample is biased because is does not include everyone.

• The sample is representative of the population's sub-groups.

A toy store owner is tracking how much kids spend each month on toys. Which choice BEST represents a sample?

• All of the kids who buy toys.

• 275 rich kids

• 200 random kids of all ages

• 292 boys ages 7-15

Identify the population and sample for each example.

• Population: Students

  Sample: Members of the football team

• Population: Members of the football team

  Sample: Students

• Population: Students

  Sample: Students that have had a broken bone

• Population: Members of the football team

  Sample: Members of the football team that have broken a bone.

As part of a 6th grade statistics project, the teacher brings a candy jar full of gumballs (red & green). The assignment is to estimate the proportion of red gumballs in the jar. Suppose one of the students draws 25 gumballs from the jar: 8 are red, 17 are green. What is the SAMPLE?

• 25 gumballs drawn

• all gumballs in the jar

• the students

• the 17 green gumballs

A (a)   is a part of a group being surveyed.

• sample

• population

• random sample

• quartile