Statistics Summative Bonus Point Flashcardizz

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group. It is selected to gather information and make inferences about the population.

Front

What does it mean for data to meet a requirement?

Back

Data meets a requirement when it satisfies specific criteria or standards set for analysis, such as quality or performance.

Front

How do you calculate the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). IQR = Q3 - Q1.

Front

What is the purpose of surveying a sample?

Back

Surveying a sample helps to gather insights and preferences from a smaller group to make predictions about a larger population.

Front

If 15 out of 50 students prefer cotton candy, what is the proportion of students who prefer cotton candy?

Back

The proportion is 15/50 = 0.3 or 30%.

Front

What is a population in statistics?

Back

A population is the entire group of individuals or items that you want to study or draw conclusions about.

Front

What is the significance of random selection in surveys?

Back

Random selection ensures that every individual has an equal chance of being chosen, which helps to eliminate bias and makes the sample representative.

Front

How do you predict preferences in a larger population based on a sample?

Back

To predict preferences, use the proportion of preferences in the sample and apply it to the total population size.

Front

What is the formula for finding the percentage of a group?

Back

Percentage = (Part/Whole) x 100.

Front

What does it mean if a data point is marked with an 'x'?

Back

It indicates that the data point does not meet the specified requirement or standard.