Grade 11 and 12 Mathematics (Moderator: geoffrey)

Let x represent the flip upon which a head first occurs when a coin is flipped repeatedly. Find the ...

Started by ashley

Thirty percent of hospital admissions for diabetic patients are related to problems with the ...

Started by mspears3

A manufacturer of matches puts 100 matches in each box of matches produced. One-tenth of one percent ...

Started by clmills979

In testing a new drug, researchers found that 5 of all patients using it will have a mild side ...

Started by schs14

A quality control inspector has determined that 0.25 of all parts manufactured by a particular ...

Started by jenna1

A multiple-choice test has 30 questions each with five responses, one of which is correct. The ...

Started by melly21297

A fair die is rolled 10 times. Compute the probability that a one appears exactly ...

Started by bio_gurl

If two dice are tossed six times, find the probability of obtaining a sum of 7 two or three ...

Started by armygirl

Four cards are selected, one at a time, from a standard deck of 52 cards. Let x represent the number ...

Started by ss2343

The median is a measure of center that divides an ordered array of data into two halves; if the data ...

Started by mpobi80

The mode is the sum of a data set's minimum plus maximum values, divided by 2. Indicate whether ...

Started by DelorasTo

If the variability of a set of data is very small, then the sample variance may be negative. ...

Started by kfurse

When all the numbers in the data set are the same, the standard deviations must be zero. Indicate ...

Started by cnetterville

In all cases, the sum of the deviations of the measurements from their mean is 0. Indicate whether ...

Started by mwit1967

The sample variance is approximately the average of the squared deviations of the measurements from ...

Started by burchfield96

In order to measure the variability in the same units as the original observations, we compute the ...

Started by serike

Measures of variability describe typical values in the data. Indicate whether the statement is ...

Started by WWatsford

The range is considered the weakest measure of variability. Indicate whether the statement is true ...

Started by altibaby

The value of the standard deviation will always exceed that of the variance. Indicate whether the ...

Started by armygirl

The standard deviation is the positive square root of the variance. Indicate whether the statement ...

Started by Pineapplelove6

If two data sets have the same range, the variances in both sets will be the same. Indicate ...

Started by D2AR0N

The sum of the deviations squared from the mean is always zero. Indicate whether the statement is ...

Started by Redwolflake15

Measures of variability are numbers that indicate the spread or scatter of observations; they show ...

Started by Frost2351

A parameter and statistic can be used interchangeably. Indicate whether the statement is true or ...

Started by tth

The median is one of the most commonly used measures of variability. Indicate whether the ...

Started by Pineappleeh