Visualising Formula for Mode Graphically

Q.

How can we find mode if two classes have the highest and same frequency? How can we identify the median class if two classes are equally near to $\frac{n}{2}$?

Q.

How f₁ is calculated in mode?

Q.

The mode of a frequency distribution can be determined graphically from ________.

1. Histrogram

2. Frequency polygon

3. Ogive

4. Frequency curve

Q.

The mode of a frequency distribution is obtained graphically from

(a) a frequency curve (b) a frequency polygon

(c) a histogram (d) an ogive

Q. The mode of a frequency distribution can be determined graphically from

(a) Histogram
(b) Frequency polygon
(c) Ogive
(d) Frequency curve

Q. The class mark of the modal class is

1. 45
2. 55
3. 35
4. 25

Q.

Mode=?

$\left(a\right)x_k+h.\left\{\frac{(f_{k-1}-f_k)}{(2f_k-f_{k-1}-f_{k+1})}\right\}\left(b\right)x_k+h.\left\{\frac{(f_k-f_{k-1})}{(2f_k-f_{k-1}-f_{k+1})}\right\}\left(c\right)x_k+h.\left\{\frac{(f_k-f_{k-1})}{(f_k-2f_{k-1}-f_{k+1})}\right\}\left(d\right)x_k+h.\left\{\frac{(f_k-f_{k-1})}{(f_k-f_{k-1}-2f_{k+1})}\right\}$

Q. The modal class is the class that has the lowest frequency.

1. False
2. True

Q. The modal class is the class that has the lowest frequency.

1. False
2. True

Q. The following is the frequency distribution of blood pressure of 100 patients.

Blood pressure (in suitable units )	110-115	115-120	120-125	125-130	130-135
No. of patients	2	35	52	8	3

(i) Draw a less-than cumulative frequency curve and find the reading below which blood pressure readings of 50% patients were observed.

(ii) Draw the histogram and hence, find the approximate mode .

Q. Draw the histogram to represent the following data and then, find the mode .

Daily sales of a store (in Rs)	0-1000	1000-2000	2000-3000	3000-4000	4000-5000	Total
Number of days in a month	2	12	10	4	2	30

Q.

The modal value will be closer to the lower limit of the modal class if the preceding class has a higher frequency than the succeeding class.

1. True

2. False

Q.

The modal value will be closer to the lower limit of the modal class if the preceding class has a higher frequency than the succeeding class.

1. True

2. False

Q.

how to calculate mode if two classes have same and highest frequency (bimodal) ?

Q.

how can 20 - 30 be the modal class when 245 is greater than 225 ?

Q. In the graph to describe the slope, we use y-axis = run and x-axis = rise.

1. True
2. False

Q. The mode of a frequency distribution is obtained graphically from
(a) a frequency curve
(b) a frequency polygon
(c) a histogram
(d) an ogive