Stats: Centers and Shapes of Data

Front

What is the mean of the following data set: 47, 49, 54, 50, 48, 47, 55?

Back

Mean = 50

Front

What is the median of the following data set: 47, 49, 54, 50, 48, 47, 55?

Back

Median = 49

Front

How would you describe a distribution that is symmetrical?

Back

A symmetrical distribution has equal values on both sides of the center, meaning the left and right halves mirror each other.

Front

What does it mean for a distribution to be skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that there are more lower values.

Front

What does it mean for a distribution to be skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that there are more higher values.

Front

What is a uniform distribution?

Back

A uniform distribution has all values occurring with the same frequency, resulting in a flat shape.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you find the first quartile (Q1) of a data set?

Back

Q1 is the median of the lower half of the data set.