Sampling Techniques and Descriptions

Mrs. Horn samples her class by selecting every third person on her class list. Which type of sampling method is this?

• Simple

• Systematic

• Stratified

• Quota

Farmer Joe separates his farm into 10 regions. He then randomly selected 5 trees from each region to estimate the number of apples produced on his apple tree farm. This is _____________ sampling.

• Quota

• Systematic

• Stratified

• Simple

When one examines the entire population instead of a subgroup of the population, this is called a ____________.

• Sampling

• Census

• Bias

• Random

To study the amount of time students spend doing homework each day, use a random number generator to select 25 students from the student enrollment database to survey.

• Convenience Sample
• Simple Random Sample
• Stratified Random Sample
• Interval Sample

What type of sampling is this? A journalist asks his family how they feel about water pollution.

• Random sample

• Convenience sample

• Stratified Random sample

• Census

What type of sampling is this? Soybeans are planted on a 48-acre field. The field is divided into one acre subplots. A sample of plants is taken from each subplot to estimate the harvest.

• Random sample

• Convenience sample

• Stratified Random sample

• Census

What type of sampling is this? A journalist interviews all 123 people after they leave a restaurant and asks them how confident they are that the food is safe.

• Random sample

• Convenience sample

• Stratified Random sample

• Census

Identify the population being studied.

The heights of 13 out of 35 corn plants at Mr. Lonardo's greenhouse.

• All corn plants at Mr. Lonardo's greenhouse.

• The 13 corn plants at Mr. Lonardo's greenhouse.

• All corn plants in greenhouses.

Determine whether the statement describes a population or a sample.

The types of cars of all the employees at a software company.

• Population

• Sample

The number of orange Skittles in a bag. 

• Discrete
• Continuous