Math Data Flashcards. 1
Terms
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- Population
- group in relation to your study
- Box Plot
-
Minimum
Q1
Median
Q3
Maximum - Q1
- first quartile= median of the bottom half of the data excluding the actual median
- Q3
- third quartile= median of the top half of the data excluding the actual median
- IQR
- Q3-Q1
- Outliers
-
Q3+1.5(IQR)
Q1-1.5(IQR) - what does a box plot measure
- quantatative variables, numerical solutions
- Least variable
- closest together
- most variable
- most spread out
- Dot Plots
- clumps that show variability
- Measures of center
- Midrange and Mean
- Midrange
-
minimum + maximum (divided by) 2
- Mean
- sum of all observations (divided by) number of observations
- Median
- any number which seperates the data into a top half and a bottom half
- Ways to calculate spread
- Range, IQR, MAD
- The Mean absolute Deviation (MAD)
- the average distance of an individual from the mean of the sample
- How to calculate the MAD
-
1. subtract each individual result from the mean
2. Take the absolute value of each "deviation" from the mean
3. Find the mean of the absolute value deviations.--- add the total value of the absolute deviations and divide it by the number of deviations. - who contributes most the mad
- the person with the biggest deviation from the mean
- Measure consistency
- spread
- Measure length
- measure of center
- Segmented bar graph
- graph that uses two groups to calculate 100%