District Assessment #3 Review 12/10

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots plotted above a number line, representing the frequency of data points.

Front

How do you calculate the percentage of a group?

Back

To calculate the percentage, divide the part by the whole and multiply by 100. For example, if 55 out of 100 students take 5 or more minutes to eat breakfast, the percentage is (55/100) * 100 = 55%.

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

How do you find the total percentage of two categories in a dot plot?

Back

Add the percentages of each category together. For example, if 10% chose tennis and 6% chose golf, the total is 10% + 6% = 16%.

Front

What is the formula to find the number of items based on a percentage?

Back

To find the number of items based on a percentage, multiply the total number of items by the percentage (in decimal form). For example, if you have 120 pieces of wood and 15% are red oak, then 120 * 0.15 = 18 pieces.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a dataset, often represented in tables or graphs.

Front

What is the significance of the median in a dataset?

Back

The median is the middle value when the data is ordered from least to greatest, and it helps to understand the central tendency of the data.

Front

How do you interpret a dot plot?

Back

To interpret a dot plot, look at the number of dots above each value to determine the frequency of each data point.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population used to represent the whole group, while a population includes all members of a specified group.

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data.