A2B Quiz 6.1-6.3 Statistics

Match the following terms and descriptions.

• census

• collection of data from a subset of a population

• sample

• Impartially assigning subjects to various treatment groups to be representative of the greater population.

• random assignment

• data collection from every member in a population

• population

• all members in a group, entire set of individuals that are being studied

Match the following terms and descriptions.

• categorical variables

• Data collected involves numerical responses.

• random selection

• Impartially selecting people for a sample survey or observational study.

• quantitative variables

• Data collected involves preferences or rankings, not numerical.

• parameter

• A characteristic of the entire group being studied.

Match the following terms and definitions.

• not statistical

• a value calculated from a sample

• statistic

• In a statistical study, this causes a likely underestimate or overestimate the value of a parameter, or the topic studied.

• statistics

• data that has one correct response

• bias

• the science of collecting, analyzing, and drawing conclusions from data

Match the following terms and descriptions

• observational study

• deliberately imposing different treatments on different groups and making comparisons about a variable.

• experiment

• using observed information to learn about a group, subjects are not interfered with aside from measurements

• sample survey

• learning about a group by having some people in the group answer questions

Match the scenario with the kind of statistical study it represents.

• sample survey

• Testing the effect of a new drug on patients with one group receiving the drug and the other a placebo.

• observational study

• Asking a random sample of students about their favorite books.

• experiment

• Watching the behavior of shoppers in a grocery store and cataloging the information in a database.

Match the following

• stratified random sampling

• A random starting point is selected, then every "nth" member is chosen for the sample.

• multi-stage random sampling

• The population is divided into mutually exclusive subgroups, then a random sample is taken from each group.

• simple random sampling

• Combines two or more sampling techniques.

• cluster random sampling

• Each member of the population is assigned a number and a random process (ie random number generator) is used to select individuals for the sample.

• systematic random sampling

• The population is divided into subgroups based on geographical regions, organizational units, or other criteria, and subgroups are randomly selected with all members in the sample.

Match the following description with the type of sampling.

• systematic random sampling

• Susan decided to randomly select a student on a school roster, then survey every next 10th student on the roster.

• convenience sampling

• Ms. McMahan made a morning announcement over the intercom and asked students to email her to rate how much they liked math class to find out how much MHS students like math.

• cluster random sampling

• Ms. Hesse decided to survey students in her Algebra 2A and Algebra 2B classes to find out how much MHS students like math.

• stratified random sampling

• Ricky decided to group students by grade level before random sampling from within each group.

• voluntary/self-select response sampling

• Gina decided to group people together according to the country they live in before random selecting entire country groups.

Which of the following is a statistical question?

• Why do schools have fire drills?

• How tall is the Empire State Building?

• How many points did LeBron James score in the 2018 NBA playoffs?

• When you call your cell phone provider's customer service number, how long will you typically be on hold?

For which dot plot is both the median and the mode equal to 27?

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Which measure is the same in both classes?

• Median

• Lower Quartile

• Range

• Interquartile Range