Box and Whiskers Plot

Q.

Why is the Median Important?

Q. Median is also known as quartile.

1. Upper
2. Lower
3. Middle

Q. The difference between the upper quartile and the lower quartile of a data set is:

1. median
2. interquartile range
3. whiskers
4. none of the above

Q. Which statements are true for the Box and Whisker plot of data?

1. It shows distribution of data set at a glance.
2. It indicated existence of unusual observations or outliners.
3. Both the above statements are true for Box and Whisker plot of data.

Q. Inter-quartile range is the difference between the upper and the lower extreme values.

1. True
2. False

Q. Which measure of central tendency gives the center point?

1. Mean
2. Median
3. Mode

Q. The _____ represents the second quartile in the box and whiskers plot?

1. lower quartile
2. upper quartile
3. whiskers
4. median

Q. Quartiles are the numbers that divide a collection of data into four intervals each of which has the same number of data points.

1. True
2. False

Q. Match the following with their values for the data given below:
$13,16,19,25,27,30,32,35,38,44,49$

1. $13$
2. $19$
3. $49$
4. $38$

Q. The following box plots show how many hours fifth-grade students and seventh-grade students studied in a given month.


If their interquatile range are $I_1$ and $I_2$ respectively, then

1. $I_1>I_2$
2. $I_1<I_2$
3. $I_1=I_2$
4. None of the above

Q. Reading a box and whiskers plot can help us observe the center, the spread and the overall range of the data.

1. True
2. False

Q. is the median that gives us the lower $25\%$ of the data.

1. Lower Quartile
2. Upper Quartile
3. Lower Extreme