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STA 111 CBT PRACTICE

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Take your time to read instructions before taking this test.

 

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

 

If you can get at least 60%, you can be rest assured that you’ll ace TMA 103 exam

 

PS

 

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

 

 

 

 

Note

 

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

 

Please do well to use our comment box incase there’s a message you want to pass to us

 

70 – 100 A

 

60 – 69 B

 

50 – 59 C

 

45 – 49 D

 

40 – 44 E

 

0 – 39 F

 

I wish you success

 

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STA 111

1 / 40

1. The class interval of the groups is

2 / 40

2. Find the mean age from the following distribution (in millions): Age: 0-9, 10-19, 20-29, ..., with frequencies 10.1, 9.3, 7.9, etc.

3 / 40

3. Stem-and-leaf is a quick way to find the ... and ... of a distribution:

4 / 40

4. Statistical data can be classified into the following except:

5 / 40

5. ...can be defined as the number of times a variable occurs:

6 / 40

6. The median age of 10 children (12, 13, ..., 16, 14) is:

7 / 40

7. The Mathematica command for calculating the mean of data 130, 84, 142, 127, 125, 97 is:

8 / 40

8. The lower and upper class limits of the class "16-18" is:

9 / 40

9. For a good questionnaire, the questions must not be:

10 / 40

10. The semi-interquartile range of the grouped data is:

11 / 40

11. The class mark of the class "16-18" is:

12 / 40

12. The harmonic mean of the set {1,2,3,4,5,6,7,8,9,10} is:

13 / 40

13. The sum of the angles of a pie chart corresponding to Sociology and Accounting (140 and 130 students) in a class of 300 is:

14 / 40

14. An example of a discrete variable is:

15 / 40

15. The class size of the class "16-18" is:

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16. Data designed with involvement in the design phase is:

17 / 40

17. Another name for the cumulative frequency curve is:

18 / 40

18. The nine points of a distribution that divide it into ten equal parts are called:

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19. Calculate the standard deviation of the data set (1001, 1003, 1005, 1007, 1009):

20 / 40

20. Obtain the value of xx if the arithmetic mean of 2,5+x,x−3,13,212, 5+x, x-3, 13, 21 is 14:

21 / 40

21. The mean of data x:3,2,3,4,5,6 with frequencies f:2,8,24,52,31,11 is

22 / 40

22. Find the standard deviation of the data set 7, 47, 8, 42, 47, 95, 42, 96, 3:

23 / 40

23. The range of the data set (5, 4, 4, 3, 3, 3, 3) is:

24 / 40

24. In a symmetrical distribution, if Q1=3 and Q3=9, the median is:

25 / 40

25. ...have each bar representing a class split up into its constituent parts.

26 / 40

26. The range of a set of data is obtained by calculating the value of:

27 / 40

27. Variables that take infinite values between two fixed points are called:

28 / 40

28. A fractional part of an entire population is referred to as:

29 / 40

29. The mean length of 10 iron rods (e.g., 12, 13, ..., 15√, 14√) is

30 / 40

30. Copy - ...can be defined as the number of times a variable occurs:

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31. The scientific method for collecting, organizing, summarizing, presenting, and analyzing data is:

32 / 40

32. Copy - A fractional part of an entire population is referred to as:

33 / 40

33. A measure of location is:

34 / 40

34. The lower and upper values of classes that mark common points between classes are called:

35 / 40

35. If the mean of -1, 0, 9, 3, K, and 5 is 2, where K is a constant, obtain the median of the set of numbers

36 / 40

36. The range of the data set (20-29, 30-39, ...) is:

37 / 40

37. data grouped as 20-29, 30-39, 40-49, and 50-59 with frequencies 18, 34, 58, and 48, respectively. The interquartile range is:

38 / 40

38. If the average of 4 children is 15 years and their parents' ages are added, making the average 25 years, the father's age (4 years older than the mother) is:

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39. Copy - The nine points of a distribution that divide it into ten equal parts are called:

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40. Data that are used for the specific purpose for which they are collected are called:

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Michael
Michael
3 months ago

Adon die