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Worksheetsdescriptive statistics
Total questions: 20
Worksheet time: 40mins
Arrangement of data into different classes or groups is called
Statistical distribution
Frequency distribution
Econometric distribution
Classful distribution
Data representing the number of data values in each of several nonoverlapping classes in a method named as
Relative distribution
Bar distribution
Frequency distribution
Cumulative distribution
The variability of a set of continuous scores around the mean is indicated by the means of
Variance
Phi-coefficient
Slope coefficient
Standard deviation
The number of observations that falls in a certain class is known to be its
Range
Limit
Rank
Frequency
The value halfway between the lower and upper class limits is known to be as
Class midpoint
Class boundary point
Class dot point
Class plot point
Dividing frequency of any class by the total number of frequencies, results in
Relative frequency
Relative Percentage distribution
Cumulative frequency
Cumulative percentage distribution
A normal distribution in kurtosis is named to be
Leptokurtic
Platykurtic
Normal kurtosis
mesokurtic
A distribution with a highest peak in kurtosis is said to be
Meso kurtosis
Lefto kurtosis
Plety kurtosis
Edge-kurtosis
A distribution having a flat degree in terms of kurtosis is known to be
Plety kurtosis
Meso kurtosis
Melto kurtosis
Lefto kurtosis
Statistics used to describe or summarize a set of observations is known to be
Descriptive statistics
Comparative statistics
Referential statistics
Inferential statistics
The mean is influenced by:
The order of data
Individual scores.
Outliers
The standard deviation.
Standard deviation tells you:
How spread out the data are.
How many outliers there are.
what the mean, median and mode are.
the square root of the mean.
You are given the following data set: 6, 3, 5, 2, 6, 4, 9.
Which of the following statements is NOT true about the data set?
The mode is 6.
The median is 5.
The mean is 6.
The range is 7.
Which of the following is not a measure of dispersion?
Range
Standard deviation
Variance
Median
Which of the following statements is NOT true?
Measures of central tendency use a single value to describe the center of a data set.
Measures of dispersion describe how spread out data are.
Inferential statistics allow us to draw conclusions from our data set to the general population.
Descriptive statistics describe how we can generalize our study data to the general population
Please describe the following type of data visualization:
This is a histogram and is used to represent linear data.
This is a radial tree and is used for geospatial mapping.
This pie chart is used to represent temporal data.
This is a pie chart and is used to represent proportions.
The bar graph shows the top five grossing movies from 2015. Which movie made approximately $450 million?
The Force Awakens
Jurassic World
Avengers: Age of Ultron
Inside Out
The bar graph shows the top five grossing movies from 2015. About how much money did Inside Out gross?
$350 million
$400 million
$500 million
$300 million
When is median a better choice than mean?
When the data is normally distributed and has no outliers
When the data is skewed
When the standard deviation is very small
When the data is non-numerical
What is the median of the following set of numbers?
5 10 5 8 9 7 8 9 9
8
9
7.8
10
