Module 1 Practice Questions (2)

Front

What is the relationship between the size of an animal and its gestation period?

Back

In general, larger animals tend to have longer gestation periods.

Front

What is a normal distribution?

Back

A normal distribution is 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 does the mean represent in a data set?

Back

The mean is the average value of a data set, calculated by adding all the values and dividing by the number of values.

Front

What does the standard deviation indicate in a data set?

Back

The standard deviation measures the amount of variation or dispersion of a set of values.

Front

How do you interpret a standard deviation of 3 days in horse gestation periods?

Back

A standard deviation of 3 days indicates that most horse pregnancies will fall within 3 days of the mean gestation period of 342 days.

Front

What percentage of horse pregnancies last longer than 345 days if the mean is 342 days and the standard deviation is 3 days?

Back

Approximately 16% of horse pregnancies last longer than 345 days.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges.

Front

What type of data is best represented by a histogram?

Back

Histograms are best for continuous data that can be grouped into ranges.

Front

What does it mean if a histogram is skewed?

Back

If a histogram is skewed, it indicates that the data is not symmetrically distributed, with a longer tail on one side.

Front

What is the significance of outliers in a data set?

Back

Outliers are data points that differ significantly from other observations and can affect the mean and standard deviation.