Find the mean in the following data set: 1, 2, 3, 4, 5, 6
What is 3.5
A type of survey that questions only a portion of the population.
What is a sample survey.
Find the median in the following data set: 1, 4, 6, 8, 19, 22, 25
What is 8
You can use this type of chart to collect data quickly, to then convert into a graph afterwards
What is a tally chart?
To calculate the median in a data set with an even number of data points.
What is add them up and divide by two?
Disadvantages of a sample survey.
What is: that it may not provide an entirely accurate account of the population's opinions.
A data set with a median of 5, and range of 5.
What is 0, 3, 5, 5, 5
List the differences between a Bar Graph and a Histogram.
Bars do not touch
Use intervals
I am a measure of central tendency that is always stuck in the middle.
What is the median?
When you question a portion of the population that may not best reflect the population's opinion.
What is a biased sample?
These are Mark's cross-country race scores (in minutes): 0.5, 1.3, 1.4, 5.7, 5.7 Which measure of central tendency would give him the best average score? why?
The median, because the mode is of the highest numbers (which is a bad score) and the extreme numbers will result in a higher mean score.