Assessment #2 (1.4, 1.7, 4.1-4.3)

A = P(1+r) ^n

Compound Interest

A = P(1-r) ^n

Depreciation

countable

Discrete

measurable

Continuous

A constant percentage loss per year.

What depreciation represents

Which measure is most affected by outliers?

Mean

Class interval with the highest frequency.

the modal class

Is height discrete or continuous?

Continuous

SD also multiplies by 4.

What happens to SD if all data are multiplied by 4

The amount multiplies by the same factor (1+r) each period.

What makes compound interest a geometric sequence?

The percentage remaining after each time period.

In depreciation, what does 1−r represent?

Simple

interest on original amount only

Compound

interest on interest

Countable values (e.g., number of pets).

What is discrete data?

Measurements that can take any value in an interval (e.g., height).

What is continuous data?

Continuous data.

What type of data uses histograms?

Categorical or discrete data.

What type of data uses bar charts?

Running total of frequencies.

What does “cumulative” mean in cumulative frequency?

• Median

• IQR

Which measures are resistant to outliers?

The most frequent value.

What does the mode represent?

Standard deviation

Which measure is most sensitive to outliers?

Mean increases by 10.

What happens to the mean if all data values increase by 10?

A: SD remains the same.

Q: What happens to SD if all data values increase by 10?