D388 Fundamentals of Spreadsheets and Data Presentations - Set 2 - Part 1

Correct Answer: A small portion of the population

A sample refers to a subset drawn from a larger population, allowing for statistical analysis without needing to study the entire population.

Correct Answer: A numerical characteristic of a population

A parameter is a numerical value that describes an entire population, while a statistic describes a sample.

Correct Answer: Continuous variable

Continuous variables can assume an infinite number of values within a range, such as height or temperature.

Correct Answer: Marital status

Categorical data represents characteristics or qualities, such as marital status, which can be classified into groups.

Correct Answer: To rank data in a specific order

The ordinal scale arranges categories in a meaningful order, but the differences between them are not quantifiable.

Correct Answer: Taking a subset from the population for analysis

Sampling is the process of selecting a portion of the population to represent the whole, facilitating data analysis without requiring complete data.

Correct Answer: In probability sampling, every member has a chance of selection.

Probability sampling ensures that every member of the population has an equal chance of being selected, enhancing the representativeness of the sample.

Correct Answer: The number of occurrences of each category

A frequency distribution table organizes data by categories and shows how many observations fall into each category.

Correct Answer: Line chart

Line charts effectively display data points over time, allowing viewers to see trends and changes across intervals.

Correct Answer: To explain the data series represented

The legend identifies different data series in a chart, helping viewers understand what each color or pattern represents.

Correct Answer: TRIM

The TRIM function eliminates unnecessary spaces from text, making it cleaner for analysis and presentation.

Correct Answer: It represents the middle value in a sorted dataset.

The median is the value that separates the higher half from the lower half of a dataset, providing a measure of central tendency that is not affected by outliers.

Correct Answer: Highest value - Lowest value

The range is calculated by subtracting the smallest value from the largest value, indicating the spread of the dataset.

Correct Answer: The running total of frequencies up to a specific point

Cumulative frequency tracks the total number of observations that fall below or at each category, aiding in understanding data distribution.

Correct Answer: By applying different weights to different values before calculating the average

The weighted mean accounts for the importance of each value by multiplying each value by its respective weight and then dividing by the total of the weights.

Correct Answer: A value that significantly deviates from other observations

Outliers are extreme values that can skew data analysis and interpretations, necessitating careful examination.

Correct Answer: =AVERAGE

The AVERAGE function computes the mean of a specified range of numbers, providing a summary measure of central tendency.

Correct Answer: Making predictions or inferences about a population based on sample data

Inferential statistics employs techniques that allow researchers to draw conclusions about a population based on observations from a sample.

Correct Answer: Restricting the type of data entered into a cell

Data validation helps maintain data integrity by limiting the type of information that can be entered into a cell, preventing errors.

Correct Answer: Data is rearranged in a specific order based on selected criteria.

The Sort feature organizes data within a worksheet according to specified parameters, such as alphabetical or numerical order.