28045555
Descripción
Test por Vishakha Achmare, actualizado hace más de 1 año
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Creado por Vishakha Achmare
hace casi 4 años
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Pregunta 1
Pregunta
In Descriptive statistics, you are describing, presenting, summarizing, and organizing your data, either through ______________.
Respuesta
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Numerical Calculations
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Graphs
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Tables
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All of them
Pregunta 2
Pregunta
Which of the following is a Measure of Central Tendency?
Respuesta
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Mean
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Median
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Mode
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All of them
Pregunta 3
Pregunta
Which of the following is less affected by outliers?
Respuesta
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Mean
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Median
-
Mode
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None of them
Pregunta 4
Pregunta
Which of the following is not affected by outliers?
Respuesta
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Mean
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Median
-
Mode
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None of them
Pregunta 5
Pregunta
Which of the following is a Measure of Variability?
Respuesta
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Range & Interquartile range
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Variance
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Standard Deviation
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All of them
Pregunta 6
Pregunta
The bigger the range of data the more ________it is?
Respuesta
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Distributed
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Undistributed
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Left Skewed
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RIght Skewed
Pregunta 7
Pregunta
Interquartile range (IQR) is the difference between _______.
Respuesta
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Q1 - Q3
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Q2 - Q3
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Q3 - Q1
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None of them
Pregunta 8
Pregunta
Range Measures_____________of the datapoint?
Respuesta
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Beginning
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End
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Beginning and End
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IQR
Pregunta 9
Pregunta
The interquartile range (IQR) is a Measure of data where___________.
Respuesta
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Fewer values lie
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The majority of values lie
Pregunta 10
Pregunta
Variance is the Average of______________from the mean.
Respuesta
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Squared deviation
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Square root of deviation
Pregunta 11
Pregunta
Standard deviation is _____________.
Respuesta
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Square root of Variance
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Square of Variance
Pregunta 12
Pregunta
When you have a low Standard deviation, your data points tend to be _________ the mean.
Respuesta
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Far from
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Close to
Pregunta 13
Pregunta
When you have a high standard deviation, your data points tend to be ________ the mean.
Respuesta
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Far from
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Close to
Pregunta 14
Pregunta
Normal Distribution is _____________.
Respuesta
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Bell shaped
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Left Skewed
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RIght Skewed
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None
Pregunta 15
Pregunta
Z-Score is used to check how many standard deviations away from the mean, a _________________lies.
Respuesta
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Distribution of entire data
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Specific data point in a data
Pregunta 16
Pregunta
Which of the following are the Terminologies of Probability?
Respuesta
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Event, Outcome
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Experiment, Probability
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All of them
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None of them
Pregunta 17
Pregunta
Bernoulli Trials have _________ outcomes.
Respuesta
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Exactly one
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Exactly two
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Exactly three
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Exactly four
Pregunta 18
Pregunta
The Binomial distribution is the Probability distribution of the number of successes in _________Bernoulli trials.
Respuesta
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one
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two
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three
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n
Pregunta 19
Pregunta
Probability Density Function is the Probability distribution of a ____________ random variable.
Respuesta
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Continuous random variable
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Discrete random variable
Pregunta 20
Pregunta
The area under a probability density function gives the probability for the __________ variable to be in that range.
Respuesta
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Continuous random
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Discrete random
Pregunta 21
Pregunta
Taking __________ samples of equal size from the data, the sample means are approximately normally distributed.
Respuesta
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Random
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Cluster
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Stratified
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Systematic
Pregunta 22
Pregunta
In a normal distribution the ________________.
Respuesta
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Mean > Median > Mode
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Mean = Median < Mode
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Mean = Median = Mode
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Mean < Median < Mode
Pregunta 23
Pregunta
Normal distribution with a mean _____ and a standard deviation of ____ is called a Standard Normal Distribution.
Respuesta
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1,0
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0,1
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0,0
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None of them
Pregunta 24
Pregunta
Central Limit Theorem states that:
If we take means of random samples from a distribution and we plot the means, the graph approaches to a ___________distribution when we have taken a sufficiently large number of such samples.
Respuesta
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Left Skewed
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Right Skewed
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Normal
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None of them
Pregunta 25
Pregunta
The Central Limit Theorem also states that the mean of __________ means is approximately equal to the mean of __________means.
Respuesta
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Population, Sample
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Population
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Sample
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None
Pregunta 26
Pregunta
A positive Z score indicates that the observed value is Z standard deviations __________ mean.
A negative Z score indicates the observed value is Z standard deviations ____________ mean.
Respuesta
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Below, Above
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Below
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Above, Below
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Above
Pregunta 27
Pregunta
______% of data lies within 1 standard deviation of the mean
______% of data lies within 2 standard deviations of the mean
______% of data lies within 3 standard deviations of the mean
Respuesta
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68.27% 99.73% 95.45%
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68.27% 95.45% 99.73%
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99.73% 95.45% 68.27%
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68.27% 95.45% 99.73%
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