STF-L2-Quiz-Measures

Integral Bytes Quiz Summary

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Integral Bytes Question 1 of 21

1. Question
Find the mean of the following numbers: 19, 21, 18, 17, 18, 22, 46
- 23
- 18
- 17
- 19
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Integral Bytes Question 2 of 21

2. Question
Find the median of the following numbers: 19, 21, 18, 17, 18, 22, 46
- 23
- 18
- 17
- 19
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Integral Bytes Question 3 of 21

3. Question
Find the mode of the following numbers: 19, 21, 18, 17, 18, 22, 46
- 23
- 18
- 17
- 19
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Integral Bytes Question 4 of 21

4. Question
The difference between s and σ is that
- s is for a sample and σ is for a population
- s is for a population and σ is for a sample
- s is a parameter and σ is not
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Integral Bytes Question 5 of 21

5. Question
A mean is known as a statistic if it is computed from the
- parameter
- population
- sample
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Integral Bytes Question 6 of 21

6. Question
The heights of some students are given.
158cm 172cm 164cm
164cm 167cm 159cm
What is the RANGE of the heights?
- 13 cm
- 330 cm
- 164 cm
- 14 cm
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Integral Bytes Question 7 of 21

7. Question
When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?
- List both of the numbers as the Median.
- Add the two numbers together and divide by 2.
- Pick the one that you want.
- Subtract the two numbers.
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Integral Bytes Question 8 of 21

8. Question
What is the range?
- The sum of the largest and smallest number
- The number in the middle
- The difference between the largest and smallest number
- The number that appears most often
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Integral Bytes Question 9 of 21

9. Question
What is the median?
- The number in the middle when the numbers are in order from least to greatest.
- The difference between the largest and smallest number.
- The average
- The number that appears most often.
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Integral Bytes Question 10 of 21

10. Question
What is the mode?
- The average
- The number that appears most often.
- The largest number – the smallest number
- The number in the middle.
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Integral Bytes Question 11 of 21

11. Question
The heights (cm) of 6 children were measured as 141, 155, 130, 146, 141, 134.

What is the standard deviation of the data? Use 141.1667 as the value for the mean to keep the precision. Use Excel or a calculator.
- 8.84
- 8.07
- 17.68
- 7.22
Correct

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Integral Bytes Question 14 of 21

14. Question
Which of the following statements are true?
- The standard deviation of a variable represents approximately the average distance from the mean.
- The wider the spread of the data, the larger the standard deviation.
- The standard deviation is the best representation of the spread of variables that have outliers or extreme values
- The upper quartile is the 25th percentile of the ordered data.
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Integral Bytes Question 15 of 21

15. Question
Which of the following statements are true?
- The inter-quartile range is the difference between the 5th percentile and the 95th percentile of the data.
- The range of a variable is the difference between the smallest value and the largest value.
- It is nearly always better to report the actual minimum and maximum rather than the range as this can show the limits
- The box in a box and whisker plot represents the range of the data.
Correct

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Integral Bytes Question 16 of 21

16. Question
Which of the following statements are true?
- The standard deviation is not sensitive to outliers or extreme values.
- The range is sensitive to outliers or extreme values.
- The standard deviation is the square root of the variance.
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Integral Bytes Question 17 of 21

17. Question
Which of the following are measures of dispersion?
- Mean
- Standard deviation
- P value
- Range (minimum to maximum)
- Variance
- Median
- Confidence interval
- Mode
- Interquartile range (lower quartile to upper quartile)
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Integral Bytes Question 18 of 21

18. Question
The heights (cm) of 6 children were measured as 141, 155, 130, 146, 141, 134.

What is the range of the data?
- 11
- 14
- 25
- 17.68
Correct

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Integral Bytes Question 19 of 21

19. Question
What is the mean of following distribution

Marks

10

30

50

70

90

Number of Students

15

25

35

25

10
- 49.16
- 48.18
- 50
- 46.58
Correct

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Integral Bytes Question 20 of 21

20. Question
What is the name of this type of graph?
- Bar Graph
- Pillar Graph
- Histogram
- Dot Plot
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Integral Bytes Question 21 of 21

21. Question
What is the name of this type of graph?
- Bar Chart
- Pillar Chart
- Histogram
- Dot Plot
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Variables
ID	V1	V2	V3
1	Red	25	1.62
2	Blue	35	1.58
3	Yellow	44	1.35
4	Green	28	1.54
5	Black	35	1.35
6	Brown	42	1.21
7	Blue	36	1.76
8	Pink	38	1.57
9	Green	30	1.47
10	Purple	40	1.18
:	:	:	:

Variables
ID	V1	V2	V3
1	Red	25	1.62
2	Blue	35	1.58
3	Yellow	44	1.35
4	Green	28	1.54
5	Black	35	1.35
6	Brown	42	1.21
7	Blue	36	1.76
8	Pink	38	1.57
9	Green	30	1.47
10	Purple	40	1.18

Statistics Foundation | STF | Self Study

Integral Bytes Quiz Summary

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Marks	10	30	50	70	90
Number of Students	15	25	35	25	10