how to compute percentiles

Compute: => 56 or 46 or 47 or 48..

In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scannin..

There are 23 computers in the first room, 43 computers in the second room and 53 computers in the third room. Find the total number of computers in all the three rooms. => 99 or 119 or 120 or 129..

A modem (a modulator/demodulator) lets you connect your computer to a standard telephone line so that you can transmit and receive electronically transmitted dat..

The salaries for 6 employees of XYZ company are $5000, $2500, $3200, $4100, $2200 and $1800. Find the percentile rank for a salary of $3200. => 42 nd percentile or 58 th percentile or 66 th percentile or 0.58 th percentile..

The cost of a computer decreased from $800 to $744. What is the percent of decrease in the cost of the computer? => 12% or 9% or 10% or 7%..

Choose the correct estimate for the weight of a computer. => 2 gm or 1 kg or 4 kg or 200 gm..

Find the percentile rank for a weight of 92 pounds if the weights (in pounds) of 6 students are given: 97, 78, 86, 82, 88, 92 What value corresponds to the 60 th percentile? => 25 th percentile, 86 or 75 th percentile, 88 or 75 th percentile, 86 or ..

Each room has 10 computers in a computer-learning institute. How many rooms are there in the institute if there are 70 computers all together? => 12 or 7 or 80 or 60..

The average price of a computer is $750. If prices of computers are approximately normally distributed with a standard deviation of $75, then what would be the maximum price of 10% of least-expensive computers? => $654 or $754 or $745 or $645..