Statistics Summative Bonus Point Flashcardizz

Front

What is a convenience sample?

Back

A convenience sample is a type of non-probability sampling where the sample is taken from a group that is easily accessible, leading to potential bias.

Front

What is a systematic random sample?

Back

A systematic random sample is a sampling method where every nth individual is selected from a list or queue, ensuring a spread across the population.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers in the data set and then divide by the total number of values.

Front

What is the median of a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the range of the middle 50% of the data.

Front

What does it mean if a sample is representative?

Back

A representative sample accurately reflects the characteristics of the larger population from which it is drawn, minimizing bias.

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value in an ordered data set. They can differ significantly in skewed distributions.

Front

What is a simple random sample?

Back

A simple random sample is a sampling method where every individual has an equal chance of being selected, ensuring no bias.

Front

How do you find the mode of a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

What is bias in sampling?

Back

Bias in sampling occurs when certain members of the population are more likely to be selected than others, leading to an inaccurate representation of the population.