Collecting, Organizing & Analyzing Data

What is a survey?

• An educated guess

• A operation on two or more addends that results in a sum.

• The amount of liquid in a container

• A way to collect data

Which is true about tally charts and frequency tables?

• They both use digits to represent data

• They are both ways to record data

• They both always have a mode

• They both use tally marks to represent data

Look at the data. Create a tally chart using the data.

Favorite Colors in Mr. Kubrik's 8th grade class

red. blue. green. red.

yellow. pink. blue. blue.

green. red. pink. blue.

yellow. pink. black. white.

orange. orange. purple. brown.

Circle the tally chart.

Look at the data below. Create a frequency table using the data.

Favorite pizza of Mr. Ortega's Science club.

cheese. cheese. cheese. cheese. pepperoni.

pepperoni. pepperoni. sausage. sausage. cheese.

veggie. sausage. veggie. Hawaiian. veggie. Hawaiian.

Find the mean, median, mode and range of the set of data below.

Mean: ___________

Median: ___________

Mode: ___________

Range: ___________

What is the range in a set of data?

• The number that occurs most often.

• An item of data that is either much larger or much smaller than the rest of the data.

• The difference between the greatest and least values in a data set.

• The sum of the data divided by the number of pieces of data.