Data Handling-Probability Statistics Math Videos for Grade 9

Data Handling-Probability Statistics - Grade 9 (Question: 1605756534)

One bowl contains 6 red balls, 5 white balls and 4 blue balls. Another bowl contains 12 yellow balls and 18 black balls. What is the probability of getting a red ball from the first and a black ball from the second bowl in a single draw from each bowl ?

A. 6/25
B. 2/25
C. 2/5
D. 6/5

Data Handling-Probability Statistics - Grade 9 (Question: 1605756324)

An urn contains 5 black balls and 3 white balls. Determine the probability of drawing two black balls in succession from the urn without replacing the ball after each drawing.

A. 3/8
B. 3/28
C. 5/14
D. 3/5

Data Handling-Probability Statistics - Grade 9 (Question: 1621931693) Locked

Two coins are tossed simultaneously 300 times and it is found that two tails appeared 150 times, one tail appeared 90 times and no tails appeared 60 times. If two coins are tossed at random, what is the probability of getting 1 tail ?

A. 0.4
B. 0.6
C. 0.3
D. 0.7

Data Handling-Probability Statistics - Grade 9 (Question: 1621932309) Locked

A poll is taken among 10000 people working in Dallas. The aim was to see what their annual salaries were.

If you choose a person at random from this group, what is the probability that he or she earns more than $75000 annually?

Data Handling-Probability Statistics - Grade 9 (Question: 1621932861) Locked

Two coins are tossed simultaneously 600 times and it is found that two tails appeared 300 times, one tail appeared 180 times and no tails appeared 120 times. If two coins are tossed at random, what is the probability of getting 2 tails ?

Data Handling-Probability Statistics - Grade 9 (Question: 1621933027) Locked

200 families with 2 children each, were selected randomly and the following data were recorded.

Out of these families, one family is selected at random. What is the probability that the selected family has no girls?

Data Handling-Probability Statistics - Grade 9 (Question: 1621927185) Locked

There are a total of 16 chocolates - 4 each in the flavors of coffee, orange, mango and banana. There are also 5 children. If each child is allowed to choose their own favorite flavor, what is the probability that all of them will get flavors of their choice?

A. \({255\over 256}\)
B. \({1\over 256}\)
C. \({1\over 257}\)
D. \({1\over 255}\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621927390) Locked

4 coins are tossed in parallel. What is the probability of getting at least one head?

A. \(1 \over 15\)
B. \(1 \over 16\)
C. 1
D. \(15 \over 16\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621927514) Locked

In 1992, the meteorological office predicted the weathers completely right for the months of february and april, and completely wrong for all the other months. What is the probability that the forecast was wrong for a given day that year?

A. \(339 \over 366\)
B. \(339 \over 366\)
C. \(307 \over 366\)
D. \(329 \over 366\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621928069) Locked

Ronald selects 3 numbers randomly from the following set of 5 numbers 10, 9, 2, 7 and 1.
He puts them in the form of a proper fraction of the type \(a \frac{b}{c}\).
What is the probability that you will get a fraction greater than \(7\frac{21}{22}\)?

A. \(1 \over 2\)
B. \(1 \over 6\)
C. \(3 \over 10\)
D. \(12 \over 30\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621928386) Locked

Coin A is flipped 3 times and coin B is flipped 4 times. What is the probability that the number of heads obtained from flipping the two coins is the same?

Data Handling-Probability Statistics - Grade 9 (Question: 1621928819) Locked

A survey of 500 girls of a school was conducted and it was found that 190 girls like soft drinks while 310 dislike it. Out of these girls, one girl is selected at random. What is the probability that the selected girl does not like soft drinks?

Data Handling-Probability Statistics - Grade 9 (Question: 1621927018) Locked

Coin A is flipped 3 times and coin B is flipped 4 times. What is the probability that the number of heads obtained from flipping the two coins is the same?

A. \(\frac{1}{39}\)
B. \(\frac{35}{128}\)
C. \(\frac{35}{37}\)
D. \(\frac{1}{128}\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621926700) Locked

The letters of the word MATHEMATICS are rearranged in a random order. What is the probability that the letters H and S have exactly 4 letters between them?

A. \(\frac{1}{110}\)
B. \(\frac{1}{12}\)
C. \(\frac{1}{105}\)
D. \(\frac{12}{110}\)

Data Handling-Probability Statistics - Grade 9 (Question: 1621942003) Locked

The given table shows the marks of 12 college students in the Science exam.

What is the average score of the class?

A. 45
B. 43
C. 38
D. 40

Data Handling-Probability Statistics - Grade 9 (Question: 1621941709) Locked

The diameter of the head of screws are given below:

The mean diameter of the heads of the screws is:

A. 83.12 mm
B. 79.45 mm
C. 75.94 mm
D. 73.35 mm

Data Handling-Probability Statistics - Grade 9 (Question: 1621942226) Locked

In an office, the age of the employees is as follows:
44 , 35 , 43 , 43 , 38 , 44 , 44 , 46 , 39 , 39 , 36.
The average age of the employees is ___________________.

Data Handling-Probability Statistics - Grade 9 (Question: 1621942261) Locked

If the mean of 4 observations x, x + 2, x + 4, x + 6 is 6 , then the value of x is __________________.

Data Handling-Probability Statistics - Grade 9 (Question: 1621942325) Locked

The mean of the following data is 8.82 Find the value of p.

Data Handling-Probability Statistics - Grade 9 (Question: 1621942461) Locked

The given table shows the profit of 5 companies in a business group last year.

What is the average profit of the business group?