SECOND TEST ON DESCRIPTIVE STATISTICS STA111 COMPUTER SCIENCE 2016/2017

KENPOLY PAST QUESTION - SECOND TEST ON DESCRIPTIVE STATISTICS STA111 COMPUTER SCIENCE 2016/2017

Second Test On Descriptive Statistics Sta111 Computer Science 2016/2017

SECOND TEST ON DESCRIPTIVE STATISTICS STA111 COMPUTER SCIENCE 2016/2017 COMPUTER SCIENCE DEPARTMENT 2ND TEST ON DESCRIPTIVE STATISTICS, 2016/2017 AC

ALGEBRA FOR SCIENCE (STP113) 2016/2017
KEYBOARDING 1 2019/2020
USE OF ENGLISH GNS111 COMPUTER SCIENCE 2012/2013

SECOND TEST ON DESCRIPTIVE STATISTICS STA111 COMPUTER SCIENCE 2016/2017

COMPUTER SCIENCE DEPARTMENT

2ND TEST ON DESCRIPTIVE STATISTICS, 2016/2017 ACADEMIC SESSION

 

COURSE CODE/TITLE:                        STA 111:    DESCRIPTIVE STATISTICS

LEVEL:                                             ND 1                                                  TIME: 45 Min.

INSTRUCTIONS:                         DO ALL

 

  1. Given the Set: 2, 3, 7, 8, and 10; find the 1st , 2nd , 3rd , and 4th  moments about;

(i) The origin (4)

(ii) About the mean of the given set.                                                       (4 MKs)

 

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  1. The table below shows the weights of 40 engine blocks in a certain workshop:
Weight (Kg) 50 – 54 55 – 59 60 – 64 65 – 69 70 – 74 75 – 79
Frequency 6 4 9 8 5 8

 

  • Draw an ogive and use it to estimate the median. (2 MKs)
  • Draw a histogram and use it to determine the (4 MKs)

 

 

  1. The ages of people who drowned during a ship wreak are:
Ages 10 – 19 20 – 29 30 – 39 40 – 49 50 – 59 60 – 69 70 – 79 80 – 89
No. Of People 25 40 30 25 30 25 15 10

 

  • Find the variance using the codeine method. (6 MKs)
  • Present the data in a histogram and use it to estimate the mode.                                                                                                             (6 MKs)

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SECOND TEST ON DESCRIPTIVE STATISTICS STA111 COMPUTER SCIENCE 2016-2017
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