Central Tendency
What are the measures of central tendency?
What is mean, median, and mode?
What measures spread of the data?
What is IQR, Range, and Standard Deviation?
The data set of heights of basketball players has a mean of 6'0 ft. Interpret the mean.
Basketball players have an average height of 6'0 ft.
What does PPMCC stand for?
Pearson's Product Moment Correlation Coefficient
the upper quartile of the data: 3, 5, 6, 7, 8, 9, 10, 12, 12
What is 11?
What is the mathematical notation for mean?
x-bar
How do you find the range?
What is the difference in the largest and smallest values in a set of data ?
What does the standard deviation represent?
What letter represents PPMCC?
r
The marks awarded for an assignment set for a Year 8 class of 20 students were as follows: 6 7 5 7 7 8 7 6 9 7 4 10 6 8 8 9 5 6 4 8 Make a frequency table.
show table
What is the mode for the following data set: 30, 37, 33, 32, 38, 32, 36, 27, 2, 30, 34, 32
What is 32?
What percentiles are Q1 and Q3 respectively?
What is 25th and 75th percentile?
What does the PMCC (r) measure?
r values are in the range from ____ to ___
-1 to 1
What is the mean and standard deviation for the following set of numbers? 4, 8, 6, 10, 16, 14, 12, 18
Mean = 11 Standard Deviation = 4.58
Find the median of the data... 14, 12, 10, 15, 18, 23, 19, 16
15.5
the lower quartile of the data: 3, 5, 6, 7, 8, 9, 10, 12, 12
What is 5.5?
The median of a data set of the ages of a group of dogs is 7 years. Interpret the median.
Half the dogs' age is 7 years or less. OR Half the dogs' age is greater than 7 years.
A positive strong correlation has a correlation coefficient close to
1
What is the mean and standard deviation for the following set of numbers? 23, 10, 11, 24, 32, 15, 13, 16
mean =18 s = 7.14
the mean of the following set of data: 134, 167, 174, 159, 100, 203, 114, 103, 192, 125, 174, 151
What is 150.25?
Set A: 3, 4, 5, 6, 2, 3, 4 Set B: 3, 6, 8, 9, 1, 9, 1 Which data set would have the smaller standard deviation? How can you tell? (no calculations needed)
Set A because the numbers are closer together
A data set of class sizes has a lower quartile of 7 and upper quartile of 26. Interpret these two values.
25% of classes have 7 students or less.
75% of classes have 26 students or less.
A correlation coefficient of -0.1
The two data sets have a weak, negative correlation.
the interquartile range of this data: 105, 117, 129, 142, 149, 155, 161, 170, 172, 179, 182, 187
What is 40?