Question 1

A hotel employee asks customers who are checking out to rate their satisfaction on a scale of 1- 10. This is an example of collecting primary data.

Accepted Answer

Primary data is data collected directly from the source for the first time for a specific purpose, and in this case, the hotel is directly collecting satisfaction ratings from its customers for its own use.

Question 2

Interval data deals strictly with qualitative data assigned to predetermined categories.

Accepted Answer

Interval data deals with quantitative data, not qualitative data. It also has an equal distance between values, unlike categorical data which has predetermined categories.

Question 3

A telemarketer calls individuals at home over the phone and asks them the likelihood that they will purchase a timeshare property over the next 12 months. This method of gathering data is known as ---------- .

Accepted Answer

This method of gathering data is known as surveys, which involve asking individuals a series of questions to collect information.

Question 4

It is recommended that personal demographic questions be placed at the beginning of the questionnaire because respondents find these questions easy to answer.

Accepted Answer

Placing personal demographic questions at the beginning of a questionnaire can make respondents uncomfortable or wary, potentially affecting their willingness to continue. It's often recommended to place these questions at the end, after respondents have engaged with the main content of the survey.

Question 5

Nominal data has all the features of interval data with the added benefit of having a true zero point.

Accepted Answer

Nominal data is categorical and does not have an order, interval, or true zero point, unlike interval data which has order and equal intervals between values but lacks a true zero point.

Question 6

An unbiased sample is a sample that does not represent the intended population and can lead to distorted findings. Unbiased sampling can occur either intentionally or unintentionally.

Accepted Answer

An unbiased sample is one that accurately represents the intended population, aiming to avoid distorted findings. Unbiased sampling seeks to eliminate or minimize bias, whether intentional or unintentional, to ensure the sample's results are generalizable to the broader population.

Question 7

Statistics is the mathematical science that deals with the collection, analysis, and presentation of data-data that can then be used as a basis for inference and induction.

Accepted Answer

Statistics involves methods for collecting, analyzing, interpreting, and presenting empirical data, which can then be used to make inferences or predictions about a population based on sample data.

Question 8

Calculating the average time callers wait on the phone for technical support is an example of inferential statistics.

Accepted Answer

Calculating the average time callers wait on the phone for technical support is an example of descriptive statistics, as it summarizes data collected from a sample or population.

Question 9

Deciding that a process that fills bottles with soda is functioning properly by checking the weights for a sample of bottles is an example of inferential statistics.

Accepted Answer

Inferential statistics involves making predictions or inferences about a population based on a sample of data. In this case, analyzing the sample weights of bottles to decide if the bottling process is functioning properly is an example of using inferential statistics to make a judgment about the entire process.

Question 10

----data use numerical values to describe something of interest either by measuring it or counting it.

Accepted Answer

Quantitative data use numerical values to describe something of interest by measuring or counting it, distinguishing it from qualitative data, which describes qualities or characteristics.

Question 11

To help ensure good questionnaire design, it is recommended that a survey is tested on a small group of respondents before releasing it to the actual participants.

Accepted Answer

Pretesting a survey on a small group helps identify and fix issues with questions or the survey design, ensuring the questionnaire is well-understood and effective for the actual study.

Question 12

A restaurant manager randomly selects tables at which customers have just been seated and records the amount of time it takes for the wait staff to greet these customers. This is an example of an experiment being used to collect data.

Accepted Answer

This is an example of observational study because the manager is simply observing and recording the behavior without attempting to influence or modify it.

Question 13

Statistics can be misused by making differences seem greater or lesser by adjusting the scale on graphs.

Accepted Answer

Adjusting the scale on graphs can visually exaggerate or minimize differences, misleading the interpretation of the data.

Question 14

A limitation of descriptive statistics is that, by summarizing large quantities of data, you lose information.

Accepted Answer

Descriptive statistics summarize data, which can lead to a loss of detail about individual data points or variations within the data set.

Question 15

A car dealership performs a credit check on a potential customer. According to the credit bureau, the customer's credit score is 710. This is an example of --------data.

Accepted Answer

Credit scores are an example of interval data because they have a meaningful order and a consistent interval between values, but they do not have a true zero point.

Question 16

A manager of an electronics store would like to investigate the impact that price has on the demand for laptop computers. Each week, the price of a Dell laptop is adjusted and the demand for each week is recorded. This is an example of an experiment being used to collect data.

Accepted Answer

This is an example of an experiment because the manager is actively manipulating one variable (price) to observe the effect on another variable (demand), which is a key characteristic of experimental research designs.

Question 17

Business statistics are statistics applied to the business world in an effort to improve people's decision making in fields such as marketing, operations, finance, and human resources.

Accepted Answer

Business statistics involve the application of statistical tools and techniques to business and managerial problems to help make more informed decisions in areas like marketing, operations, finance, and human resources.

Question 18

Determining the proportion of customers who have credit scores greater than 700 is an example of descriptive statistics.

Accepted Answer

Descriptive statistics summarize and describe the features of a dataset, such as calculating proportions, means, or medians, which in this case involves determining the proportion of customers with credit scores above 700.

Question 19

Bias can occur in a survey when a question is stated in a way that encourages or leads a respondent to a particular answer.

Accepted Answer

Bias in a survey can occur through leading questions, which are phrased in a way that suggests a particular answer or influences the respondent's response, thereby compromising the objectivity of the data collected.

Question 20

Education level is an example of nominal data.

Accepted Answer

Education level is a categorical variable that can be classified into different groups, such as high school, college, and graduate school. Nominal data is a type of categorical data that has no inherent order or ranking.

Quiz 1: Healthy Change