CUET Level - II JEE Mock Test - 7 ( Maths )

Range of a data is equal to

• Range = max - min

• Range = min - max

• Range = max+min

• Range = max+min

If the variance of the data is 121, the standard deviation of the data is

• 11

• 12

• 13

• 14

The geometric mean of series having mean = 25 and harmonic mean = 16 is

• 18

• 19

• 20

• 21

The coefficient of variation is computed by

• S.D

• Mean

The mean and S.D. of the marks of 200 candidates were found to be 40 and 15 respectively. Later, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S.D. respectively are ______________.

• 14.98

• 15.98

• 16.98

• 17.98

If a variable takes the discrete values α − 4, α − 7 / 2, α − 5 / 2, α − 3, α − 2, α + 1 / 2, α − 1 / 2, α + 5 (α > 0), then the median is ____________.

• a+5

Runs scored by a batsman in 10 innings are: 38, 70, 48, 34, 42, 55, 63, 46, 54, 44 the mean deviation is ___________.

• 8.6

• 9

• 9.8

• 11.9

If any four numbers are selected, and they are multiplied, then the probability that the last digit will be 1, 3, 5 or 7 is ___________.

• 16/625

• 17/625

• 18/625

• 19/625

If a is an integer lying in [−5, 30], then the probability that the graph y = x² + 2 (a + 4) x − 5a + 64 is strictly above the x-axis is __________.

• 2/9

• 3/9

• 4/9

• 6/9

A bag contains 2 white and 4 black balls. A ball is drawn 5 times with replacement. The probability that at least 4 of the balls drawn are white is ________.

• 11/243

• 12/243

• 13/243

• 14/243