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The three characteristics that describe a set of numerical data are?
mode, mean and median
What measure of central tendency may not exist for all numeric data sets?
Measurement Scale Best measure of the 'middle' Numerical mode Ordinal Median Interval Symmetrical data- mean skewed data median Ratio Symmetrical data- Mean skewed data median
What is a single number used to describe a set of data mean median mode?
2,5,4,5
What does numerical data mean?
Numerical Data means data consisting of numbers, not categories, such as the heights of students.
Can ypu find the mean and median with data from a histogram?
You can estimate the median and the mean.
The three characteristics that describe a set of numerical data are?
mode, mean and median
What measure of central tendency may not exist for all numeric data sets?
Measurement Scale Best measure of the 'middle' Numerical mode Ordinal Median Interval Symmetrical data- mean skewed data median Ratio Symmetrical data- Mean skewed data median
When is the mean not a valid statistic to describe a set of data?
The population data may be skewed and thus the mean is not a valid statistic. If mean > median, the data will be skewed to the right. If median > mean, the data is skewed to the left.
Are median and mean always similar?
No, not always. Median is the number that's in the middle of a group of numerical data. Mean is just the average of a set of numbers, which isn't always in the middle.
When might you want to use the median to describe the center of a data set instead of then mean?
You would use the median if the data were very skewed, with extreme values.
What is a single number used to describe a set of data mean median mode?
2,5,4,5
What is the best way to organize data?
Mathematical data can be best organized in numerical order. By doing this, statistics are more easily found, such as mean, median, and mode.
Advantages and disadvantages of mean in statistics?
MEDIANUse the median to describe the middle of a set of data that does have an outlier.Advantages:• Extreme values (outliers) do not affect the median as strongly as they do the mean.• Useful when comparing sets of data.• It is unique - there is only one answer.Disadvantages:• Not as popular as mean.
What does mean mode and median have in common?
They all describe data set or data sets,hey tell you how far apart they are from each other.
Does all data have a mean median or mode?
No, not all data sets have a mode but all data sets have a mean and median.
What is the median the mean and the range?
In statistical analysis, the range is the lowest to highest score. The median is the exact middle, and the mean is the numerical average.
What does numerical data mean?
Numerical Data means data consisting of numbers, not categories, such as the heights of students.
