statistics

2. The distribution of the height (X) in centimeter (cm) of the 16
teachers of SCNHS was presented below. Construct a
histogram for the random variable (X).

3. Normal Probability Distribution – a
data distribution where the mean,
median and mode are equal and the
distribution is clustered at the center.
Normal Curve – graph of normal
distribution.
Properties of a normal probability
distribution
1. The normal probability distribution
is bell-shaped curve.
2. The curve is symmetric about its
mean.
3. The standard normal curve extends
indefinitely in both directions.
4. The spread of the curve depends on
the standard deviation of the
distribution
5. The area under the standard normal
curve is 1.

4. Normal Probability Distribution – a data distribution where the
mean, median and mode are equal and the distribution is clustered
at the center.
Normal Curve – graph of normal distribution.
Properties of a normal probability distribution
1.The normal probability distribution is bell-shaped curve.
2.The curve is symmetric about its mean.
3.The standard normal curve extends indefinitely in both directions.
4.The spread of the curve depends on the standard deviation of the
distribution
5.The area under the standard normal curve is 1.

5. I. True or False. Write the word TRUE if the statement is correct and FALSE if the
statement is incorrect
1. The total area of the normal curve is 1.
2. Normal probability distribution is used to determine the probabilities of a
discrete random variable.
3. The mean, median and mode in a normal distribution have the same value.
4. The distance of the number in the horizontal line or the x-axis should always
proportional.
5. The normal probability distribution has a mean µ = 1 and standard deviation
ơ=0.
II. Given the following, sketch the normal curve.
1. z = 1.58
2. z = - 1.92

6. Given the following, sketch the
normal curve.
1. z = 0. 76
2. z = - 0. 64
3. z = 2.67
4. z = -2. 24