Data Management

Question 1

Data

Answer 1

And Quantitative data can also be Discrete or Continuous : Discrete data can only take certain values (like whole numbers) Continuous data can take any value (within a range) Put simply: Discrete data

Question 2

Mean

Answer 2

Mean Deviation The Mean of the distances of each value from their Mean. Yes, we use “ Mean “ twice: Find the Mean … use it to work out distances … then find the Mean of those! Three steps: 1.

Question 3

Mode

Answer 3

• 15” But the actual Mode may not even be in that group! Or there may be more than one Mode. Without the raw data we don’t really know. But, we can estimate the Mode using the following formula: Estimated Mode = L + f m

Question 4

Pictograph

Answer 4

Pictograph more … A Pictograph uses pictures or symbols to show the value of the data. Pictographs Search :: Index :: About :: Contact :: Contribute :: Cite This

Question 5

Median

Answer 5

Estimating the Median from Grouped Data To estimate the Median, let’s look at our data again: Number of games Frequency 1 - 5 2 6 - 10 7 11 - 15 8 16 - 20

Question 6

Bar Graph

Answer 6

Definition of Bar Graph more … A Graph drawn using rectangular Bars to show how large each value is. The Bars can be horizontal or vertical. See: Histogram Data Graphs (Bar, Line, Pie)