Statistics Summative Bonus Point Flashcardizz

Front

What is the mean of the data set: 35, 41, 19, 27, 30?

Back

30.4

Front

What type of sampling method is used when Corey surveys every 15th student entering the school?

Back

Systematic Random Sample

Front

Are Mrs. Welborn's findings about the average reading level valid or invalid if she only asked her own students?

Back

Invalid since her sample was a convenience sample and contains bias.

Front

What is the interquartile range of a data set if the answer is 10?

Back

10

Front

If 15 students prefer cotton candy, 11 prefer chocolate, 25 prefer sour candy, and 9 prefer gum, how many students will like gum if there are 1140 students at the school?

Back

171

Front

Define 'mean' in statistics.

Back

The mean is the average of a data set, calculated by adding all the numbers and dividing by the count of numbers.

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 easy to reach.

Front

Explain 'systematic random sampling'.

Back

Systematic random sampling involves selecting every nth individual from a list or sequence.

Front

What does 'interquartile range' (IQR) measure?

Back

The interquartile range measures the spread of the middle 50% of a data set.

Front

What is a 'voluntary response sample'?

Back

A voluntary response sample consists of individuals who choose to participate in a survey or study.