Sampling
____________________ is the process of collecting and analysing data to be able to answer a question
Statisitcs
What can you use to organise data?
Frequency table OR dot plot
How many segments can a box plot be broken into?
4 quartiles
What are the three measures of central tendency?
Mean, median and mode
What are the four types of distribution?
Symmetrical, positively skewed, negatively skewed and bimodal
What are the two types of data called?
Categorical and numerical
How many columns are in a frequency table?
3
A stem and leaf plot is a type of graph which is used to show _____________ data
Numerical
What is mean?
The average number
Which type of distribution has two peaks?
Bimodal
Nominal and ordinal are types of what data?
Categorical
A _____ _______ is a simple graphical way of showing the results of a frequency table
What feature of a stem plot is the most important?
The key
What is median?
The middle number
This is also called a normal distribution or a bell-shaped distribution
Symmetrical distribution
Is this data discrete or continuous?
Shoe size of each student in your class
Discrete
A __________ ______ lists items and shows the number of times the items occur
Frequency Table
The interquartile range (IQR) contains the middle ___ of data
50%
Calculate the mean of this data set?
4, 5, 6, 8, 11, 14
8
Most of the data is on the left side for which type of distribution?
Positively skewed
Is this data nominal or ordinal?
Sales ranking of the top magazines
Ordinal
After you have made a frequency table, what is an easy way to display the results?
Dot plot
What figures make up the 5-figure summary?
Min, Q1, Median, Q3 and Max
Calculate the median of this data set?
4, 5, 6, 8, 11, 14
7
The median is the preferred measure of central tendency for which types of distribution?
Positive and negative