Download U13 L2.1 Population Parameters (Mean Median Mode)

U13 L2.1 Population Parameters (Mean Median Mode)
October 14, 2016
U13 L2.1
Population Parameters
(Measure of Central Tendency­
Mean, Median, and Mode)
Population is the set of all subjects with a given characteristic that is being studied. All populations by their nature, have Natural or Inter­Individual Variability.
Census: a study of an entire population
A sample is a part of a population.
Algebra 2 ­ Kisslinger, Small, Martin
U13 L2.1 Population Parameters (Mean Median Mode)
October 14, 2016
Populations have Population Parameters which you know as statistics that describe the population. ex. mean, median, standard deviation, or inter­quartile range.
You are to use your graphing calculator to complete these exercises.
Important Statistics
Mean ­ the average of the data items X
Median ­ the middle data item when the items are sorted
Mode ­ the number that appear the most in the set of data
Algebra 2 ­ Kisslinger, Small, Martin
U13 L2.1 Population Parameters (Mean Median Mode)
October 14, 2016
1st and 3rd Quartiles ­ the 25th and 75th percentiles
Interquartile Range ­ Q3 ­ Q1
Standard Deviation ­ on average, how far each data item is from the mean. We have 2 Standard Deviations, the Population Standard Deviation and the Sample Standard Deviation.
A survey was taken amongst 11 people of the number of passwords they currently have to remember. The results are shown below:
6, 0, 1, 2, 2, 1, 3, 4, 3, 1, 3
Find the mean, median, and mode of the following data.
Algebra 2 ­ Kisslinger, Small, Martin
U13 L2.1 Population Parameters (Mean Median Mode)
October 14, 2016
Using your TI Graphing Calculator
STAT, ENTER to enter data in L1
then STAT, CALC, 1­VAR STATS L1
to find the mean, standard deviation, and quartiles
** arrow up onto L1 and CLEAR to empty L1... don't DELETE
Algebra 2 ­ Kisslinger, Small, Martin
U13 L2.1 Population Parameters (Mean Median Mode)
Algebra 2 ­ Kisslinger, Small, Martin
October 14, 2016
U13 L2.1 Population Parameters (Mean Median Mode)
Outlier: member(s) of a data set that are far away from the rest of the data Homework Mean, Median, Mode Worksheet
Algebra 2 ­ Kisslinger, Small, Martin
October 14, 2016