Topics 2-3: Descriptive statistics

Topics 2-3: Descriptive statistics

University

20 Qs

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Topics 2-3: Descriptive statistics

Topics 2-3: Descriptive statistics

Assessment

Quiz

Business

University

Practice Problem

Hard

Created by

Michael Jiang

Used 17+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Which of the following is a measure of data centrality?

Median

Z-score

Percentile

Standard deviation

2.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Which of the following is a measure of data variability?

Mode

Quartile

Z-score

Range

3.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Which of the following measures is NOT easily influenced by outliers in a data set?

Mean

Interquartile range

Variance

Correlation coefficient

4.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Please find the median of the following data set:

1, 2, 3, 4, 5, 6, 7, 8

4

5

4.5

5.5

5.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Which of the following statement is NOT true?

Median = Q2

50th percentile = Q2

IQR = Q1 - Q3

Range = Largest - Smallest

6.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

When a set of data is skewed to the right, we can say that ___.

the data set is postively skewed

the data set is negatively skewed

the mean is less than the median in most cases

the median and the mean are almost equal

7.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Media Image

Which of the following might be a proper estimate of the skewness of the data in the plot?

0

-0.5

0.8

0.2

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