For quantitative data, an interval that includes all the values that fall within two numbers-the
lower and upper limits is called a ...

The............ is given by the midpoint of the upper limit of one class and the lower limit of the next class.

the difference between the two boundaries of a class gives the …

The............. or mark is obtained by dividing the sum of the two limits (or the two boundaries) of a class by 2

can be displayed in many common ways such as a histogram or a polygon

The bars in a histogram are drawn adjacent to each other with gap between them.

A histogram can be drawn for

A histogram can assume any one of a large number of shapes.

A graph formed by joining the midpoints of the tops of successive bars in a histogram with straight lines is called ...........(جت في الامتحان)

in a stem-and-leaf display of quantitative data, each value is divided into two portions: a stem and a leaf.The leaves for each stem are shown separately in a display.

can help us detect outliers (extreme values) in a data set

Data sets consist of measurements collected over time at regular intervals so that we can learn about change over time

… is the most frequently used measure of central tendency. For ungrouped data

is obtained by dividing the sum of all values by the number of values in the data set:

Mean =

we can state that the value of the population mean 𝝁 is constant. However, the value of the sample mean 𝑥᪄ varies from sample to sample.

A major shortcoming of the ......... as a measure of central tendency is that it is very sensitive to outliers (جت في الامتحان)

The mean is always the best measure of central tendency because it is heavily influenced by outliers

is the value of the middle term in a data set that has been ranked in increasing order.

The single middle value if 𝑛 is .......... The average of the middle two values if 𝑛 is ..........