Module 1 Practice Questions (2)

Front

What is the mean gestation period for horses?

Back

342 days.

Front

What is the standard deviation of horse gestation periods?

Back

3 days.

Front

What percentage of horse pregnancies last longer than 345 days?

Back

16%.

Front

What does a normal distribution represent in statistics?

Back

A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What is the mean length of human pregnancy?

Back

266 days.

Front

What is the standard deviation of human pregnancy lengths?

Back

16 days.

Front

What percentage of human pregnancies last more than 298 days?

Back

2%.

Front

What is a histogram?

Back

A graphical representation of the distribution of numerical data, showing the frequency of data points within certain ranges.

Front

What type of data is best represented by a histogram?

Back

Quantitative data.

Front

What does it mean if a dataset is normally distributed?

Back

It means that the data follows a bell-shaped curve, where most of the observations cluster around the central peak and probabilities for values further away from the mean taper off equally in both directions.