**STA301 Quiz Statistics**

Question # 1

What does it mean when a data set has a standard deviation equal to zero:

Select correct option:

Mean = median = mode

All of the values in the data are same

The mean of the data is also zero

All values of the data appear with the same frequency

Question # 2

Match the binomial probability P(x< 23) with the correct statement.

Select correct option:

P(there are at most 23 successes)

P (there are fewer than 23 successes)

P (there are more than 23 successes)

P (there are at least 23 successes)

Question # 3

In statistics, the term ‘expected value’ implies the ___ value.

Select correct option:

Independent

Normal

Standard

Mean

Question # 4

A quantity obtained by applying certain rule or formula is known as

Select correct option:

Estimate

Estimator

Parameter

Proportion

Question # 5

Total no. of possible samples of size 2 (without replacement) from the population of size 6, will be:

Select correct option:

20

15

10

18

Question # 6 of 10 ( Start time: 08:50:41 PM ) Total Marks: 1

When a coin is tossed 3 times, the probability of getting 3 or less tails is

Select correct option:

1/2

0

1

3/5

1

Question # 7

Total no. of possible samples of size 3 (with replacement) from the population of size 6, will be:

Select correct option:

256

196

216

325

Question # 8

If c is a constant, then E(c) = ___

Select correct option:

0

1

c

-c

Question # 9 of 10 ( Start time: 08:53:35 PM ) Total Marks: 1

Using the normal approximation to the binomial distribution with n= 3 and p= 0.0571 the value of mean is:

Select correct option:

0.1713

0.2132

0.5133

0.1923

Question # 10

Suppose 60% of a herd of cattle is infected with a particular disease. Let Y = the number of non-diseased cattle in a sample of size 5. the distribution of Y is:

Select correct option:

Binomial with n = 5 and p = 0.6

Binomial with n = 5 and p = 0.4

Binomial with n = 5 and p = 0.5

Poisson with u = .6