320

The decisions concerning an organization's goals and future plans are called

strategic decisions

Data collected from several entities over a period of time (minutes, hours, days, etc.) are called

time series data

________ refers to the technology that allows data, collected from sensors in all types of machines, to be sent over the Internet to repositories where it can be stored and analyzed.

Internet of Things (IoT)

The data on the time taken by 10 students in a class to complete an exam is an example of what type of data

Quantitative data

Data-ink is the ink used in a table or chart that

is necessary to convey the meaning of the data to the audience.

Any data value with a z-score less than -3 or greater than +3 is considered to be a(n)

outlier

A ______________ is used for examining data with more than two variables, and it includes a different vertical axis for each variable

parallel-coordinates plot

A forecast that helps direct police officers to areas where crimes are likely to occur based on past data is an example of

predictive analytics

The act of collecting data that are representative of the population data is called

random sampling

______ is an open-source programming environment that supports big data processing through distributed storage and distributed processing on clusters of computers.

Hadoop

The charts that are helpful in making comparisons between categorical variables are

- Bar charts and column charts

In order to visualize three variables in a two-dimensional graph, we use a

- Bubble chart

______ are visual methods for displaying data.

- Charts

The data dashboard for a marketing manager may have KPIs related to

- Current sales measures and sales by region.

Fields may be chosen to represent all of the following except ____________ in the body of a PivotTable.

- Filters

Deleting the grid lines in a table and the horizontal lines in a chart

- Increases the data-ink ratio.

In a business, the values indicating the business's current operating characteristics, such as its financial position, the inventory on hand, and customer service metrics, are typically known as

- Key performance indicators

DJ needs to display data over time. Which of the following charts should he use?

- Line chart

Which of the following are necessary to be determined to define the classes for a frequency distribution with quantitative data?

- Number of nonoverlapping bins, width of each bin, and bin limits

Making visual comparisons between categorical variables is difficult in a

- Pie chart

To summarize and analyze data with both a cross tabulation and charting, Excel typically pairs

- PivotCharts with PivotTables

Which one of the following statements is not true concerning PivotTables in Excel?

- PivotTables summarize only categorical and quantitative data

A _____________ is a graphical presentation of the relationship between two quantitative variables.

- Scatter chart

A useful chart for displaying multiple variables is the

- Scatter chart matrix

Tables should be used instead of charts when

- The values being displayed have different units or very different magnitudes

A _____________ is a line that provides an approximation of the relationship between the variables.

- Trendline

The correlation coefficient will always take values

- between -1 and +1

The ______________________ shows the number of data items with values less than or equal to the upper class limit of each class

- cumulative frequency distribution

A summary of data that shows the number of observations in each of several non-overlapping bins is called a(n)

- frequency distribution

The data collected from the customers in restaurants about the quality of food is an example of a(n)

- observational study

The ________________ is a point estimate of the population mean for the variable of interest.

- sample mean

A _____________________ determines how far a particular value is from the mean relative to the data set's standard deviation.

- z-score

For data having a bell-shaped distribution, approximately _____ percent of the data values will be within one standard deviation of the mean.

68

A data visualization tool that updates in real time and gives multiple outputs is called

A data dashboard

A characteristic or a quantity of interest that can take on different values is known as a(n)

Variable

The difference in a variable measured over observations (time, customers, items, etc.) is known as

Variation

Corporate-level managers use ______ to summarize sales by region, current inventory levels, and other company-wide metrics all in a single screen.

data dashboards

The U.S. Internal Revenue Service uses _____________ to identify patterns that distinguish questionable annual personal income tax filings.

data mining

Data dashboards are a type of _________ analytics

descriptive