**For which data set, the mean is not a good representative measures of central tendency.**

__Question:__**Options:**

A. | There are 7 classes with the below frequencies. {10, 12, 15, 17, 14, 15, 17} | |

B. | There are 6 classes with the below frequencies. {2, 20, 25, 17, 19, 22} | |

C. | There are 7 classes with the below frequencies. {5, 7, 5, 6, 4, 5, 7} | |

D. | There are 6 classes with the below frequencies. {17, 20, 25, 17, 19, 22} |

**Answer: Option B**

: B

We know that extreme values in the data affect the mean. Here only for the data set{2, 20, 25, 17, 19, 22}, we find the extreme value as one class has the frequency as 2 and the others have frequency 20, 25, 17, 19 and 22.

### Submit Answer & Explaination

Earn Reward Points by submitting Detailed Explaination for this Question

## More Questions on This Topic :

**The times (in seconds) taken by 150 athelets to run a 110 m hurdle race are tabulated below**

__Question 1.__Class13.8−1414−14.214.2−14.414.4−14.614.6−14.814.8−15Frequency245714820

The number of atheletes who completed the race in less than 14.6 s is

- 11
- 71
- 82
- 130

**Answer: Option C**

: C

The number of atheletes who completed the race in less than 14.6 = 2 + 4 + 5 + 71 = 82

- l+(n2−cff ) ×h
- l−(n2−cff ) ×h.
- l+(n2+cff ) ×h.
- l+2n

**Answer: Option A**

: A

The median for grouped data is formed by l+(n2−cff ) ×h. Where l is lower class limit of median class.

n is total number of observations.

cf is the cumulative frequency of the class preceding the median class.

f is the frequency of the median class and h is the class size.

**The following data shows monthly savings of 100 families . Calculate the mode of the given frequency distribution.**

__Question 5.__Monthly savings(Rs) Number of families 1000−2000142000−3000153000−4000214000−5000275000−600025

- 4790
- 4760
- 4750
- 4780

**Answer: Option C**

: C

Modal class is 4000-5000 within f1 = 27, f0 = 21, f2 = 25, I = 4000, h = 1000 Mode = l +f1−f02f1−f0−f2×h Mode = 4000 + 68×1000 = 4750

- 2500 - 3000
- 1000 - 1500
- 1500 - 2000
- 3000 - 3500

**Answer: Option A**

: A

The median class is identified as the class whose cumulative frequency will be greater than n2, where 'n' is the sum of the frequencies. (n=200).

Next, we divide 200 by 2.

n2=2002=100

We now locate the class whose cumulative frequency is greater than 100.

"2500 - 3000" is the class whose cumulative frequency 155 is greater than 100.

∴The median class is 2500 - 3000.

**Check all Questions in this Topic : Click HERE**

## Topics

10th Grade11th And 12th11th Grade - Commerce12th Grade - Commerce4th Grade5th Grade6th Grade7th Grade8th Grade9th GradeAccountingAptitudeBanking AwarenessBusiness ManagementC ProgramCatChemical EngineeringCivil EngineeringCommunication SkillsComputer FundamentalComputer FundamentalsComputer ScienceCssDatabaseEconomicsElectrical EngineeringEnglishEnglish Verbal AbilityGeneral AptitudeGeneral KnowledgeGstHrmHtmlIasJava ProgramJavascriptMarketingMechanical EngineeringMs ExcelMs WordNetworkingOperating SystemPhp ProgramPower PointQuantitative AptitudeReasoningSqlTally

## Recent Questions

**Q.**What Kind Of An Exception Will Be Thrown If The String To Pa....

**Q.**The Second Most Senior Office In The Country Is Of-....

**Q.**What Is The Ratio Of The Matches Played By Either Denmark Or....

**Q.**Why Do We Need To Treat Factory Wastes Before They Are Allow....

**Q.**Match List-I With List-II And Select The Correct Answer Usin....

**Q.**How Many Watt-hours Represent 65 W Used For 18 H?....

**Q.**If A Company Sells A Car With A Marked Price Of Rs. 272000 A....

**Q.**My Doctor Knew That I Would Eventually Recover And Do Kind O....

**Q.**The Lathe Spindles Are Usually Made Hollow And Provided With....

**Q.**The Units Of Moment Of Inertia Of An Area Are....

**Q.**The Systems Have Been Classified In Different Ways....

**Q.**Which Of The Following Is Not A Factor To Consider When Swit....

**Q.**When The Nature Of Contact Between The Elements Of A Pair Is....

**Q.**An Empty Fuel Tank Of A Car Was Filled With A Type Petrol. W....

**Q.**A Programmable Controller:....

**Q.**The Parameter Which Completely Defines The Chip Formation In....

**Q.**the Average Of Four Positive Integers Is 69. The Highest I....

**Q.**The Angle Of Elevation Of The Top Of A Tower At A Point On T....

**Q.**A Compound Key....

**Q.**If A2 + B2 + C2 + 3 = 2(a + B + C) Then The Value Of (a + B ....