Determine whether the quantitative variable is discrete or continuous 6) the num

Question

Determine whether the quantitative variable is discrete or continuous 6) the number of pills in an aspirin bottle B) discrete D: STATID55 1.14-9 Topic Objeaivee .3) Ditinguish bw discnete and contisuous vartables Provide an appropriate response. Astudent is asked to rate a guest speaker's ability to communicate on a scale of 7) poor-average-good-excellent. The student is to fill in a corresponding circle on a bubble form This is an example of collecting what type of data? A) discrete DSTATIDES 1.4-13 Topie B) insightul C) qualitative D) continuous Determine the level of measurement of the variable. 8) the day of the month B) ordinal A) nominal DSTATID5S 11 Tople Objective ()Dmine the le C) interval D) ratio fuent of a variabla 9) time spent playing basketball 9) A) interval DSTATID5S 1.1.5-13 Topie B) ordinal C) ratio D) nominal Determine whether the study depicts an observational shudy or an experiment. 10) A researcher obtained a randon sample of 100 smokers and a randoin sample of 100 nonsmokers. 10) After interviewing all 200 participants in the study, the researcher compared the rate of depressions among the smokers with the rate of depression among nonsmokers A) observational study B) experiment Topic Obitive Distinguish betwet tn Dservational study and an openment. Provide an appropriate response 11) True or False Experiments assist the researcher in isolating the causes of the relationships that exist 11) between two variabies A) False B) True

Explanation / Answer

6)

Definition of discrete variable:

Discrete variable is a quantitative variable that has either a finite number of possible values or a countable number of possible values. The term countable means that the values result from counting, such as 0, 1, 2, 3, and so on.

The number of pills in an aspirin bottle would be a discrete variable because we would count the number of pills in an aspirin bottle.

7)

The appropriate response for the question is:

A student is asked to rate a guest speaker's ability to communicate on a scale of the student is to fill in a corresponding circle on a bubble form. This is an example of collecting qualitative data.

8)

The variable for the day of the month is ratio level of measurement.

Because, In this level of measurement, the observations, in addition to having equal intervals, can have a value of zero as well. The zero in the scale makes this type of measurement unlike the other types of measurement, although the properties are similar to that of the interval level of measurement. In the ratio level of measurement, the divisions between the points on the scale have an equivalent distance between them.

That is, Day 0, day 1, day 2, day 3, …

9)

The variable time spent playing basketball is ratio level of measurement.

10)

This is an observational study.

There was no attempt by the researchers to manipulate or influence the variable(s) of interest.

Using the definition of an observational study measures the value of the response variable without attempting to influence the value of either the response or explanatory variables. They can claim association.

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