Barbara Is Delighted That Her 4-Month-Old Son Matt Is Developing

question 106

Multiple Choice

Barbara is delighted that her 4-month-old son Matt is developing normally.At this age,Matt should be able to

• A)roll over.
• B)sit unsupported.
• C)pick up small objects.
• D)stand while holding on.

---

Definitions:

Kurtosis

A measure of the "tailedness" of the probability distribution of a real-valued random variable, indicating the sharpness of the peak of a frequency-distribution curve.

Variability

A measure of how spread out or dispersed the scores in a set of data are.

Spread

A statistical term describing the range or distribution of data points in a data set.

Dispersion

A statistical term referring to the spread of data points around a central measure, such as mean or median.