Stats HW 2.1-2.3

A company did a study on the physical activity level and weight gain of its employees. Age was not considered so it might be an example of a(n) .

Confounding Variables

Factors that influence the results of a study that the researcher did not, or could not, account for are known as ?

Confounding factors

Speeds of cars driving on the highway are an example of which type of data?

Continuous

Temperatures in Kelvin of various sites on the moon are an example of which type of data?

Continuous

Weights of animals are an example of which type of data?

Continuous

Widths of the doors in a restaurant are an example of which type of data?

Continuous

The____ receives a placebo.

Control Group

Colors of jelly beans in a jar are an example of which type of data?

It's Neither Discrete or Continuous.

Suits of playing cards are an example of which type of data?

It's Neither Discrete or Continuous.

Determine whether an observational or experimental study is appropriate to address the following statement: A car wash operator wants to study whether customers are satisfied with the service they receive.

Observational

Determine whether an observational or experimental study is appropriate to address the folterm-8lowing statement: A deli cart entrepreneur wants to know if a need for additional staffing exists.

Observational

Months of the year are an example of which type of data?

Qualitative

Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data. You toss a coin and record "head" as 1 and "tail" as 2.

Qualitative, Neither continuous or discrete, nominal

Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data. Five people are in a bakery waiting for service. Each person takes a ticket when they enter the bakery in order to determine when they will be served. The person with the lowest ticket number will be served next.

Qualitative, neither discrete or continuous, and its ordinal.

Goals scored during a soccer game are an example of which type of data?

Quantitative

The heights of 48 randomly selected female students.

Quantitative, Continuos, Ratio

Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data. The IQ scores of students at the local college.

Quantitative, Discrete, Interval

Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data: Birth years of each person in your family.

Quantitative, Discrete, Interval

Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data. The salaries of 80 randomly selected employees.

Quantitative, discrete, and ratio

A researcher applies a process to produce a desired response to the:

Treatment Group

In ____ a experiment, only the participant does not know whether they received a placebo or treatment.

single-blind

In a ____ experiment, only the subject does not know whether they have been placed un the control or experimental group.

single-blind

The numbers of different colors various boxes of crayons have are an example of which type of data?

Discrete

The numbers of people in each statistics class at your school are an example of which type of data?

Discrete

Determine whether an observational or experimental study is appropriate to address the following statement: A car wash operator wants to study if using a new cleaning product will reduce staffing costs.

Experimental

Determine whether an observational or experimental study is appropriate to address the following statement: A deli cart entrepreneur wants to find out if closing the store early on weeknights will hurt profits.

Experimental